Updated on 2021/12/21

写真a

 
MINAGI Shogo
 
Organization
Faculty of Medicine, Dentistry and Pharmaceutical Sciences Professor
Position
Professor
External link

Degree

  • 歯学博士 ( 広島大学 )

Research Interests

  • Study on Craniomandibular Disorders

  • Study on the role of denture prosthesis in geriatric dentistry

  • 頭蓋下顎機能異常に関する研究

  • 老年歯科における義歯の役割に関する研究

Research Areas

  • Life Science / Prosthodontics

Education

  • Hiroshima University   歯学研究科   歯科補綴学

    - 1986

      More details

    Country: Japan

    researchmap

  • Hiroshima University    

    - 1986

      More details

Professional Memberships

▼display all

Committee Memberships

  • 日本顎顔面補綴学会   COI委員会 委員長  

    2020.7   

      More details

    Committee type:Academic society

  • 日本顎顔面補綴学会   代議員  

    2020.7   

      More details

    Committee type:Academic society

  • 日本顎顔面補綴学会   倫理委員会委員  

    2020.7   

      More details

    Committee type:Academic society

  • 日本顎顔面補綴学会   認定制度委員会委員  

    2020.7   

      More details

    Committee type:Academic society

  • 日本顎口腔機能学会   顎口腔機能セミナー担当理事  

    2020   

      More details

  • Journal of Prosthodontic Research   Associate Editor  

    2017 - 2021   

      More details

  • 日本顎顔面補綴学会   倫理委員会委員  

    2016   

      More details

  • 日本顎顔面補綴学会   認定医制度委員  

    2016   

      More details

  • 日本顎口腔機能学会   会長  

    2014 - 2015   

      More details

    Committee type:Academic society

    researchmap

  • 日本顎関節学会   代議員  

    2010 - 2012   

      More details

    Committee type:Academic society

    日本顎関節学会

    researchmap

  • 日本咀嚼学会   理事  

    2010 - 2012   

      More details

    Committee type:Academic society

    日本咀嚼学会

    researchmap

  • 日本顎口腔機能学会   セミナー企画担当理事  

    2010 - 2011   

      More details

    Committee type:Academic society

    日本顎口腔機能学会

    researchmap

  • 日本顎関節学会   評議員  

    2010   

      More details

    Committee type:Academic society

    日本顎関節学会

    researchmap

  • 日本顎顔面補綴学会   理事  

    2009   

      More details

    Committee type:Academic society

    日本顎顔面補綴学会

    researchmap

  • Japan Academy of Orofacial Pain   会長  

    2009   

      More details

    Committee type:Academic society

    Japan Academy of Orofacial Pain

    researchmap

  • 日本顎口腔機能学会   常任理事  

    2009   

      More details

    Committee type:Academic society

    日本顎口腔機能学会

    researchmap

  • 日本咀嚼学会   編集委員  

    2009   

      More details

    Committee type:Academic society

    日本咀嚼学会

    researchmap

  • 日本顎関節学会   理事  

    2008 - 2010   

      More details

    Committee type:Academic society

    日本顎関節学会

    researchmap

  • 日本補綴歯科学会   理事  

    2008   

      More details

    Committee type:Academic society

    日本補綴歯科学会

    researchmap

  • 岡山歯学会   理事  

    2008   

      More details

    Committee type:Academic society

    岡山歯学会

    researchmap

  • 日本顎口腔機能学会   評議員  

    2008   

      More details

    Committee type:Academic society

    日本顎口腔機能学会

    researchmap

  • 日本老年歯科医学会   理事  

    2008   

      More details

    Committee type:Academic society

    日本老年歯科医学会

    researchmap

  • Asian Academy of Craniomandibular Disorders   country representative  

    2008   

      More details

    Committee type:Academic society

    Asian Academy of Craniomandibular Disorders

    researchmap

  • 日本補綴歯科学会   理事  

    2008   

      More details

    Committee type:Academic society

    日本補綴歯科学会

    researchmap

  • 日本頭蓋下顎障害学会   理事  

       

      More details

    Committee type:Academic society

    日本頭蓋下顎障害学会

    researchmap

  • 日本補綴歯科学会   理事  

       

      More details

    Committee type:Academic society

    日本補綴歯科学会

    researchmap

  • 岡山歯学会   理事  

       

      More details

    Committee type:Academic society

    岡山歯学会

    researchmap

  • 日本顎口腔機能学会   評議員  

       

      More details

    Committee type:Academic society

    日本顎口腔機能学会

    researchmap

▼display all

 

Papers

  • Detection of muscle fatigue caused by repeated posterior tongue lift movement from neck surface EMG: a pilot study. Reviewed International journal

    Hiroshi Furutera, Shigehisa Kawakami, Naoki Kodama, Yosuke Manda, Keisuke Kitagawa, Ryuichi Nakahara, Shogo Minagi

    Journal of oral rehabilitation   2021.9

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    BACKGROUND: Fatigue is an important factor for muscle strengthening in rehabilitation medicine. Frequency analysis has been regarded as the gold standard for muscle fatigue assessment in surface electromyography (EMG). However, there are no experiments quantifying fatigue with grouped discharge (GD), which is one of the historical phenomena observed in patients having fatigue, by using high sampling rate recording of EMG. OBJECTIVE: To investigate the effect of fatigue, which is induced by repeated posterior tongue lift movement (TLM), on the occurrence of GD peaks, thus, to provide possible basis as a parameter for future fatigue evaluation. METHODS: Nineteen healthy adults (9 men and 10 women) participated in this study. The muscle fatigue protocol consisted of repetitive posterior TLM and maximum voluntary contractions (MVC). Bilateral N-EMG (Neck surface EMG for measuring the muscle activity of the posterior tongue) was recorded. RESULTS: Subjective tongue fatigue at the end of the protocol was significantly higher than at beginning throughout the muscle fatigue protocol (p < .01). The frequency of occurrence of GD peaks was 0.9 ± 1.2 (per second) at the baseline in 33 of 38 subject sides, and significantly increased depending on fatigue progression (p < .01). CONCLUSION: It was shown that fatigue due to repetitive posterior tongue lifting resulted in significant increase in the frequency of occurrence of GD peaks. Especially, the nature of GD, showing very few occurrences at non-fatigue condition, might work as an advantageous property for its use in future absolute evaluation of fatigue phenomena.

    DOI: 10.1111/joor.13258

    Scopus

    PubMed

    researchmap

  • Coordination of surface electromyography activity in the posterior tongue region during mastication of differently textured foods Reviewed

    Keitaro Mori, Yousuke Manda, Keisuke Kitagawa, Hiroaki Nagatsuka, Hiroshi Furutera, Naoki Kodama, Shogo Minagi

    Journal of Oral Rehabilitation   48 ( 4 )   403 - 410   2021.4

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1111/joor.13135

    Scopus

    PubMed

    researchmap

    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1111/joor.13135

  • Phosphate group adsorption capacity of inorganic elements affects bond strength between CAD/CAM composite block and luting agent Reviewed

    Eri TOKUNAGA, Noriyuki NAGAOKA, Yukinori MARUO, Kumiko YOSHIHARA, Goro NISHIGAWA, Shogo MINAGI

    Dental Materials Journal   40 ( 2 )   288 - 296   2021.3

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Dental Materials and Devices  

    DOI: 10.4012/dmj.2020-029

    Web of Science

    Scopus

    PubMed

    researchmap

  • Lack of occlusal support did not impact amyloid β deposition in APP knock-in mice Reviewed

    Asuka Murakami, Tetsuya Hara, Chie Yamada-Kubota, Miho Kuwahara, Tomoka Ichikawa, Shogo Minagi

    Journal of Prosthodontic Research   2021

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Prosthodontic Society  

    DOI: 10.2186/jpr.jpr_d_20_00205

    PubMed

    researchmap

  • Newly designed flat surface artificial tongue system for speech improvement in glossectomy patients: A preliminary study Reviewed

    Hiroaki Nagatsuka, Shigehisa Kawakami, Miho Kuwahara, Chie Kubota, Naoki Kodama, Shogo Minagi

    Journal of Prosthodontic Research   2021

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Prosthodontic Society  

    DOI: 10.2186/jpr.jpr_d_20_00230

    PubMed

    researchmap

  • CCN3 (NOV) Drives Degradative Changes in Aging Articular Cartilage. Reviewed International journal

    Miho Kuwahara, Koichi Kadoya, Sei Kondo, Shanqi Fu, Yoshiko Miyake, Ayako Ogo, Mitsuaki Ono, Takayuki Furumatsu, Eiji Nakata, Takako Sasaki, Shogo Minagi, Masaharu Takigawa, Satoshi Kubota, Takako Hattori

    International journal of molecular sciences   21 ( 20 )   1 - 18   2020.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Aging is a major risk factor of osteoarthritis, which is characterized by the degeneration of articular cartilage. CCN3, a member of the CCN family, is expressed in cartilage and has various physiological functions during chondrocyte development, differentiation, and regeneration. Here, we examine the role of CCN3 in cartilage maintenance. During aging, the expression of Ccn3 mRNA in mouse primary chondrocytes from knee cartilage increased and showed a positive correlation with p21 and p53 mRNA. Increased accumulation of CCN3 protein was confirmed. To analyze the effects of CCN3 in vitro, either primary cultured human articular chondrocytes or rat chondrosarcoma cell line (RCS) were used. Artificial senescence induced by H2O2 caused a dose-dependent increase in Ccn3 gene and CCN3 protein expression, along with enhanced expression of p21 and p53 mRNA and proteins, as well as SA-β gal activity. Overexpression of CCN3 also enhanced p21 promoter activity via p53. Accordingly, the addition of recombinant CCN3 protein to the culture increased the expression of p21 and p53 mRNAs. We have produced cartilage-specific CCN3-overexpressing transgenic mice, and found degradative changes in knee joints within two months. Inflammatory gene expression was found even in the rib chondrocytes of three-month-old transgenic mice. Similar results were observed in human knee articular chondrocytes from patients at both mRNA and protein levels. These results indicate that CCN3 is a new senescence marker of chondrocytes, and the overexpression of CCN3 in cartilage may in part promote chondrocyte senescence, leading to the degeneration of articular cartilage through the induction of p53 and p21.

    DOI: 10.3390/ijms21207556

    Scopus

    PubMed

    researchmap

  • Flexural properties, bond ability, and crystallographic phase of highly translucent multi-layered zirconia International journal

    Yukinori Maruo, Kumiko Yoshihara, Masao Irie, Goro Nishigawa, Noriyuki Nagaoka, Takuya Matsumoto, Shogo Minagi

    Journal of Applied Biomaterials and Functional Materials   18   2020

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    This study investigated the mechanical properties, bond ability, and crystallographic forms of different sites in a highly translucent, multi-layered zirconia disk. Flexural properties, bond ability to resin cement, and phase composition were investigated at three sites of a highly translucent, multi-layered zirconia disk: incisal, middle, and cervical. Flexural strength (FS) and flexural modulus (FM) were measured with static three-point flexural test. Shear bond strength (SB) to resin cement was measured after 24 h storage (37°C). Phase composition under mechanical stress was analyzed using X-ray diffraction. Without air abrasion, FS at the incisal site yielded the lowest value and was significantly lower than the middle and cervical sites. Air abrasion lowered the FS of each site. FM at the incisal site without air abrasion showed the significantly lowest value, and air abrasion increased its FM value. At the middle and cervical sites, their FM values were higher than the incisal site but were not significantly affected by air abrasion. SB value did not show significant differences among the sites. After sintering, cubic zirconia was detected at each site. Rhombohedral phase transformation occurred after mirror polishing. In highly translucent, multi-layered zirconia which was mainly composed of cubic zirconia, rhombohedral phase transformation occurred under mechanical stress and resulted in weakened mechanical properties.

    DOI: 10.1177/2280800020942717

    Scopus

    PubMed

    researchmap

  • セルフアドヒーシヴ・レジンセメント(自動練和型)の歯質接着性からの検討 プライマー併用効果、Dual-cure vs.Self-cure

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    接着歯学   37 ( 3 )   123 - 123   2019.9

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • Differences in comminution progress during mastication in healthy dentate and denture-wearing elderly people. Reviewed International journal

    Sugimoto H, Tanaka Y, Kodama N, Minagi S

    Journal of prosthodontic research   64 ( 3 )   257 - 263   2019.8

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER IRELAND LTD  

    PURPOSE: This study aimed to investigate the effect of removable denture prostheses on the comminution progress in elderly people. METHODS: Twenty-two denture wearers of Eichner's classification B and C (75.1±5.3 years old) and 20 young fully dentate subjects (27.6±1.9 years old) participated in the masticatory examination, which used a combined test food from 5 daily food materials. Full masticatory cycles lasting until subjects needed to swallow and the half number of the cycles were adopted as masticatory conditions. Digital images of food particles under wet conditions were obtained for each bolus, and particles were analyzed by calculating the homogeneity and particle size indices. RESULTS: The characteristic properties of the food particles were observed using a homogeneity index in the elderly denture group for half masticatory strokes. Their homogeneity index was significantly higher than that of the young dentate group. By contrast, no significant difference was observed in the indices for particles immediately before swallowing between two groups. CONCLUSIONS: The comminuted particle size before swallowing in healthy denture wearers was not significantly different from that in the natural dentate group. The comminution of the first-half process in denture wearers was typical and could be one possible focus for meal property specifications in future studies.

    DOI: 10.1016/j.jpor.2019.08.001

    Web of Science

    Scopus

    PubMed

    researchmap

  • Characteristics of Grouped Discharge Waveforms Observed in Long-term Masseter Muscle Electromyographic Recording: A Preliminary Study. Reviewed

    Maeda N, Kodama N, Manda Y, Kawakami S, Oki K, Minagi S

    Acta medica Okayama   73 ( 4 )   357 - 360   2019.8

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    We investigated the characteristics of grouped discharge (GD) waveforms obtained from long-term masseter electromyogram (EMG) recording in 6 female temporomandibular disorder (TMD) patients with myofascial pain and 6 healthy females. The EMG measurement was performed from the morning of the experiment day until the subject woke up the next day. We observed a significantly larger number of GD waveforms in the TMD group compared to the control group (p=0.002). Our results indicate that the existence of GD waveforms in masseter EMGs might be a predictor of future TMD with myofascial pain.

    DOI: 10.18926/AMO/56938

    Scopus

    PubMed

    researchmap

  • Effects of stage II transport and food bolus sampling methods on the properties of food particles. Reviewed International journal

    Tanaka Y, Sugimoto H, Kodama N, Minagi S

    Journal of oral rehabilitation   47 ( 2 )   196 - 203   2019.8

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY  

    During mastication, some portion of the food bolus is gradually transported to the oropharynx before deglutition, which is known as stage II transport (STII). Although the importance of STII in mastication and deglutition has been widely acknowledged, food particle properties that are transported into the oropharynx by STII have not yet been fully specified. To reveal the food particle properties that are transported into the oropharynx by STII and to assess the usefulness of new food bolus sampling methods for the evaluation of masticatory efficiency. Twenty-two healthy volunteers participated in this study. Four different bolus sampling conditions were adopted: (a) the whole food particles were expectorated when the subject was aware of the first deglutition, (b) the last bolus to be swallowed at the end of unrestrained food intake was expectorated (aftermost bolus sample), (3) the whole food particles were expectorated when the subject felt ready to swallow after swallow-inhibited mastication (swallow-inhibited sample), (4) the particles were regurgitated from the oropharynx after the first STII (stage II-transported sample). Food particles were analysed using the homogeneity index and particle size index. There was no significant difference between food particles in the aftermost bolus sample and swallow-inhibited sample. The particles in the stage II-transported sample showed significantly more homogeneous and smaller sizes than other sampling conditions (P < .05). The food particles transferred to the oropharynx in the stage II-transported sample were smaller than those broken down by natural mastication.

    DOI: 10.1111/joor.12879

    Web of Science

    Scopus

    PubMed

    researchmap

  • Effects of the loss and reconstruction of molar occlusal support on memory retrieval and hippocampal neuron density in rats. Reviewed International journal

    Kurozumi A, Hara T, Sakamoto S, Araki D, Iida-Tamada S, Kuroda-Ishimine C, Minagi S

    Journal of prosthodontic research   63 ( 3 )   283 - 287   2019.7

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    PURPOSE: Animal experiments have shown that the loss of occlusal support causes impairments in spatial cognition. Many reports have focused on the memory encoding process, and only few studies have investigated the effect on memory retrieval. This study aimed to examine the effects of both the loss and reconstruction of occlusal support on the memory retrieval process and on the number of hippocampal pyramidal cells. METHODS: The experimental animals were divided into a molarless group, in which molars were extracted, a denture-wearing molarless group with experimental dentures inserted after molar extraction, and a control group. Radial maze trials were performed for 20 consecutive days (acquisition phase). The rats were tested on long-term memory retention following the acquisition phase in eight trials every five days, and in an additional trial 20 days later (probe phase). RESULTS: The denture-wearing molarless group showed higher levels of spatial learning and memory than the molarless group. There were no significant differences in memory retrieval during the probe phase between the denture-wearing molarless and the control group. The molarless group showed significantly worse spatial learning and memory and had fewer neurons in the hippocampus than the control group. CONCLUSIONS: Our results suggest that the loss of occlusal support decreases the number of pyramidal cells in the hippocampus and impairs memory decoding and retrieval. However, this effect is suppressed by the reconstruction of occlusal support.

    DOI: 10.1016/j.jpor.2018.12.009

    Scopus

    PubMed

    researchmap

  • Effect of food properties and chewing condition on the electromyographic activity of the posterior tongue. Reviewed International journal

    Manda Y, Kodama N, Maeda N, Minagi S

    Journal of oral rehabilitation   46 ( 6 )   511 - 517   2019.6

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    BACKGROUND: Retraction of the posterior tongue facilitates bolus formation, food transfer and Stage II transport in chewing and swallowing. Surface electromyography of the neck region (N-EMG) enabled the evaluation of muscle function at the posterior tongue. Although previous studies showed that food hardness increased masticatory muscles EMG activity and volitional chewing altered swallowing, the effect of food properties and chewing condition on N-EMG activity has not yet been elucidated. OBJECTIVE: To investigate the effect of food properties and chewing conditions on N-EMG. METHODS: Twelve healthy adults (six men and six women, mean age 28.1 ± 2.7) participated in this study. Three test foods were used: a cookie (solid food), crushed cookies adjusted using agar and water (semisolid food) and crushed cookies adjusted using thickening agent and water (soft food). Masseter and submental muscle EMG and N-EMG activity were recorded while chewing the three test foods. Participants were instructed to masticate the three test foods in three chewing conditions: (a) chewing freely, (b) chewing test foods with the same number of chewing cycles as when chewing solid food and (c) chewing with a maximum effort. RESULTS: Total N-EMG activity when chewing solid food was higher than that in the other two test foods regardless of the chewing condition. In soft food and semisolid food, the total N-EMG activity was increased by increasing the number of chewing cycles. CONCLUSION: The total N-EMG activity was increased while chewing hard food, which indicates the positive effect of chewing hard food on rehabilitation at the posterior tongue.

    DOI: 10.1111/joor.12774

    Scopus

    PubMed

    researchmap

  • 大臼歯用CAD/CAMハイブリッドレジンのナノ構造とサンドブラスト処理による影響

    西川 悟郎, 丸尾 幸憲, 長岡 紀幸, 吉原 久美子, 徳永 英里, 前田 直人, 入江 正郎, 皆木 省吾

    日本補綴歯科学会誌   11 ( 特別号 )   282 - 282   2019.5

     More details

    Authorship:Last author   Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 新しい器械式練和の充填用グラスアイオノマーセメント I級窩洞適合性と歯質接着強さ

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   38 ( Special Issue73 )   62 - 62   2019.4

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 大臼歯用CAD/CAMブロックに対するレジンセメントの接着強さの検討

    入江 正郎, 徳永 英里, 丸尾 幸憲, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   36 ( 3 )   98 - 98   2018.10

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • Naturalness Improvement Algorithm for Reconstructed Glossectomy Patient's Speech Using Spectral Differential Modification in Voice Conversion. Reviewed International journal

    Hiroki Murakami, Sunao Hara, Masanobu Abe, Masaaki Sato, Shogo Minagi

    Interspeech 2018, 19th Annual Conference of the International Speech Communication Association, Hyderabad, India, 2-6 September 2018.   2018-September   2464 - 2468   2018.9

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:ISCA  

    In this paper, we propose an algorithm to improve the naturalness of the reconstructed glossectomy patient's speech that is generated by voice conversion to enhance the intelligibility of speech uttered by patients with a wide glossectomy. While existing VC algorithms make it possible to improve intelligibility and naturalness, the result is still not satisfying. To solve the continuing problems, we propose to directly modify the speech waveforms using a spectrum differential. The motivation is that glossectomy patients mainly have problems in their vocal tract, not in their vocal cords. The proposed algorithm requires no source parameter extractions for speech synthesis, so there are no errors in source parameter extractions and we are able to make the best use of the original source characteristics. In terms of spectrum conversion, we evaluate with both GMM and DNN. Subjective evaluations show that our algorithm can synthesize more natural speech than the vocoder-based method. Judging from observations of the spectrogram, power in high-frequency bands of fricatives and stops is reconstructed to be similar to that of natural speech.

    DOI: 10.21437/Interspeech.2018-1239

    Web of Science

    Scopus

    researchmap

  • Passive Periodontal Sensation Threshold of Upper Molars in Patients with Myofascial Pain Reviewed International journal

    Hirata Atsutoshi, Kato Seiya, Mude Acing Habibie, Oki Kazuhiro, Matsunaga Tadashi, Minagi Shogo

    OPEN DENTISTRY JOURNAL   12 ( 1 )   1012 - 1020   2018

     More details

    Authorship:Last author   Publishing type:Research paper (scientific journal)  

    Background and Objective: The relationship between periodontal sensation and Myofascial Pain (MP) is not yet fully clarified. The aim of this study was to test the null hypothesis that there is no difference in the periodontal sensation threshold between subjects with MP and subjects with no Temporomandibular Disorders (TMD). Methods: Participants have clinically assessed in accordance with the Research Diagnostic Criteria for Temporomandibular Disorders version 1.0 guidelines and assigned to the MP group (mean age 54.8 ± 14.8 years; 1 male and 11 females) or the control group (mean age: 63.9 ± 13.2 years; 1 male and 15 females). The Passive Periodontal Sensation Threshold (PPST) was evaluated using impulsive mechanical stimulation on the occlusal surface parallel to the tooth axis of the maxillary first molar, if present. The difference in the mean PPST between the MP group and the control group was evaluated using the Student t-test after checking for homoscedasticity. Results: The mean PPST value was 1050.1 ± 480.3 mN in the MP group and 712.3 ± 288.5 mN in the control group. A significant difference was observed between these mean PPST values (p = 0.045). Conclusion: There was a significant difference in PPST between the MP group and the control group. Although the etiology of the change of PPST is still unknown, the higher PPST value observed in MP patients suggests that future study on occlusal dysesthesia or occlusal sensation-related pathosis is warranted.

    DOI: 10.2174/1874210601811131012

    Web of Science

    Scopus

    researchmap

  • Enhancing a Glossectomy Patient's Speech via GMM-based Voice Conversion Reviewed International journal

    Kei Tanaka, Sunao Hara, Masanobu Abe, Shogo Minagi

    2016 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA)   2017-August   3384 - 3388   2016

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

    In this paper, we describe the use of a voice conversion algorithm for improving the intelligibility of speech by patients with articulation disorders caused by a wide glossectomy and/or segmental mandibulectomy. As a first trial, to demonstrate the difficulty of the task at hand, we implemented a conventional Gaussian mixture model (GMM)-based algorithm using a frame-by-frame approach. We compared voice conversion performance among normal speakers and one with an articulation disorder by measuring the number of training sentences, the number of GMM mixtures, and the variety of speaking styles of training speech. According to our experiment results, the mel-cepstrum (MC) distance was decreased by 40% in all pairs of speakers as compared with that of pre-conversion measures; however, at post-conversion, the MC distance between a pair of a glossectomy speaker and a normal speaker was 28% larger than that between pairs of normal speakers. The analysis of resulting spectrograms showed that the voice conversion algorithm successfully reconstructed high-frequency spectra in phonemes /h/, /t/, /k/, /ts/, and /ch/; we also confirmed improvements of speech intelligibility via informal listening tests.

    DOI: 10.1109/APSIPA.2016.7820909

    Web of Science

    Scopus

    researchmap

  • Dependence of psychophysical threshold on rate of applied force to the upper first molar in humans Reviewed International journal

    Kazuhiro Oki, Chieko Shirahige, Naoto Maeda, Shunichi Sakamoto, Youhei Kumazaki, Shin Mikamo, Takako Miyazaki, Yoshie Yamamoto, Shogo Minagi

    Archives of Oral Biology   58 ( 5 )   474 - 481   2013.5

     More details

    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

    Objective: The study aims to investigate the dynamic perception of a force applied to the upper first molar for different rates of force increase. Design: Six volunteers (four male and two female
    mean age, 27.2 ± 2.4 years) with full natural dentition (except for the third molars) participated in this study. The psychophysical threshold for a force applied to the right maxillary first molar and the reaction time corresponding to each threshold were measured for rate of force increase of 103.74, 236.23, 354.58, 478.22 and 584.63 mN s-1. The physical impulse, which is the integral of force over time, was calculated for each threshold. Results: Psychophysical thresholds in the upper first molar increased with the rate of force increase. The reaction time corresponding to each threshold decreased with increasing force rate. Impulses corresponding to each threshold were independent of force rate. Conclusions: In the present study, the psychophysical threshold for a force applied to a molar tooth was shown to change depending on the rate of increase of the exerted force. From the viewpoint of the impulse, the dissipated energy necessary to reach the psychophysical sensation threshold was almost constant, regardless of the rate of force increase. © 2012 Elsevier Ltd.

    DOI: 10.1016/j.archoralbio.2012.10.012

    Web of Science

    Scopus

    PubMed

    researchmap

  • Emerging Evolution and Concepts in Clinical Tests for Prosthodontic Treatment

    MINAGI Shogo, FUJISAWA Masanori

    Annals of Japan Prosthodontic Society   5 ( 2 )   135 - 136   2013.4

     More details

    Language:Japanese   Publisher:Japan Prosthodontic Society  

    DOI: 10.2186/ajps.5.135

    CiNii Article

    CiNii Books

    researchmap

  • Development and fundamental experiments of occlusal sound detecting device using soft suction cups Reviewed

    Kurumi Yagi, Shuichi Wakimoto, Koichi Suzumori, Yohta Yamamoto, Yohei Kumazaki, Kazuhiro Oki, Shogo Minagi

    2012 19TH INTERNATIONAL CONFERENCE MECHATRONICS AND MACHINE VISION IN PRACTICE (M2VIP)   264 - 269   2012

     More details

    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

    For healthy chewing, well equilibrated occlusion is necessary to minimize unexpected overloading of the tooth. However, the current occlusal examination depends on techniques, skills and sense of doctors.
    In this research, we are focusing on that occlusal condition is related to sound from teeth, and have developed a novel occlusal checking system detecting the sound. The system is configured with multiple sound detecting devices. Each device consists of a soft suction cup and a miniature microphone. The suction cup can be adhered on a tooth by applying negative pressure through a tube, and the microphone is inserted into the tube. Therefore when a patient bites, generated sound from the target tooth can be detected by the microphone.
    First, we have found out the relationship between adhesion force and applied negative pressure to the suction cup, and decided optimum value of negative pressure. Then, by using two devices, we have conducted experiments of detecting occlusal sound using a jaw model for confirming the potential of this system. Furthermore, we carried out the experiments in the oral cavity, and we succeeded in detecting sounds from tooth by using fabricated devices.

    Web of Science

    researchmap

  • ラット大脳皮質咀嚼野の電気刺激が誘発するリズミカルな顎運動と唾液分泌の関連

    前田 直人, 兒玉 直紀, 美藤 純弘, 小橋 基, 皆木 省吾, 松尾 龍二

    Journal of Oral Biosciences   53 ( Suppl. )   143 - 143   2011.9

     More details

    Language:Japanese   Publisher:(一社)歯科基礎医学会  

    researchmap

  • Nanolayering of phosphoric acid ester monomer on enamel and dentin. Reviewed

    Yoshihara K, Yoshida Y, Hayakawa S, Nagaoka N, Irie M, Ogawa T, Van Landuyt KL, Osaka A, Suzuki K, Minagi S, Van Meerbeek B

    Acta biomaterialia   7 ( 8 )   3187 - 3195   2011.8

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCI LTD  

    Following the "adhesion-decalcification" concept, specific functional monomers possess the capacity to primary chemically interact with hydroxyapatite (HAp). Such ionic bonding with synthetic HAp has been demonstrated for 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP), manifest as self-assembled "nanolayering". In continuation of that basic research this study aimed to explore whether nanolayering also occurs on enamel and dentin when a 10-MDP primer is applied following a common clinical application protocol. Therefore, the interaction of an experimental 10-MDP primer and a control, commercially available, 10-MDP-based primer (Clearfil SE Bond primer (C-SE), Kuraray) with enamel and dentin was characterized by X-ray diffraction (XRD), complemented with transmission electron microscopy interfacial ultrastructural data upon their reaction with enamel and dentin. In addition, XRD was used to study the effect of the concentration of 10-MDP on nanolayering on dentin. Finally, the stability of the nanolayers was determined by measuring the bond strength to enamel and dentin when a photoinitiator was added to the experimental primer or when interfacial polymerization depended solely on the photoinitiator supplied with the subsequently applied adhesive resin. XRD confirmed nanolayering on enamel and dentin, which was significantly greater on dentin than on enamel, and also when the surface was actively rubbed with the primer. Nanolayering was also proportional to the concentration of 10-MDP in the primer. Finally, the experimental primer needed the photoinitiator to obtain a tensile bond strength to dentin comparable with that of the control C-SE primer (which also contains a photoinitiator), but not when bonded to enamel. It is concluded that self-assembled nanolayering occurs on enamel and dentin, even when following a clinically used application protocol. The lower bonding effectiveness of mild self-etch adhesives to enamel should be ascribed in part to a lower chemical reactivity (nanolayering) with enamel HAP. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.actbio.2011.04.026

    Web of Science

    PubMed

    researchmap

  • Corticomotor plasticity induced by tongue-task training in humans: a longitudinal fMRI study. International journal

    Taro Arima, Yoshinobu Yanagi, David M Niddam, Noboru Ohata, Lars Arendt-Nielsen, Shogo Minagi, Barry J Sessle, Peter Svensson

    Experimental brain research   212 ( 2 )   199 - 212   2011.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Corticomotor pathways may undergo neuroplastic changes in response to acquisition of new motor skills. Little is known about the motor control strategies for learning new tongue tasks. The aim of this study was to investigate the longitudinal effect of novel tongue-task training on corticomotor neuroplasticity. Thirteen healthy, right-handed men, aged 24-35 years (mean age ± SD: 27.3 ± 0.3 years), performed a training task consisting of standardized tongue protrusion onto a force transducer. The tongue task consisted of a relax-protrude-hold-relax cycle with 1.0 N as the target at the hold phase lasting for 1.5 s. Subjects repeated this task for 1 h. Functional magnetic resonance imaging was carried out before the tongue-task training (baseline), 1-h after the training, and one-day and one-week follow-up. During scanning, the subjects performed tongue protrusion in blocks interspersed with rest. A region-of-interest (ROI) approach and an explorative search were implemented for the analysis of corticomotor activity across conditions. All subjects completed the tongue-task training (mean success rate 43.0 ± 13.2%). In the baseline condition, tongue protrusion resulted in bilateral activity in regions most typically associated with a motor task including medial frontal gyrus (supplementary motor area [SMA]), precentral gyrus (tongue motor cortex), putamen, thalamus, and cerebellum. The ROI analysis revealed increased activity in the precentral gyrus already 1 h post-training. One day after the training, increased activity was observed in the precentral gyrus, SMA, putamen, and cerebellum. No increase was found 1 week after training. Correlation analyses between changes in success rates and changes in the numbers of voxels showed robust associations for left Area 4a in primary motor cortex 1 h, 1 day, and 1 week after the tongue-task training and for the left Area 4p in primary motor cortex and the left lateral premotor cortex 1 day after the training. In the unrestricted analysis, increased activity was found in the parahippocampal gyrus 1 h after the tongue-task training and remained for a week. Decreased activity was found in right post-central and middle frontal gyri 1 h and 1 week post-training. The results verified the involvement of specific corticomotor areas in response to tongue protrusion. Short-term tongue-task training was associated with longer-lasting (up to 1 week) changes in motor-related brain activity. The results suggested that primary motor areas are involved in the early and late stages, while other motor areas mainly are engaged in the later stage of corticomotor neuroplasticity of the tongue.

    DOI: 10.1007/s00221-011-2719-7

    PubMed

    researchmap

  • Corticomotor plasticity induced by tongue-task training in humans: a longitudinal fMRI study

    Taro Arima, Yoshinobu Yanagi, David M. Niddam, Noboru Ohata, Lars Arendt-Nielsen, Shogo Minagi, Barry J. Sessle, Peter Svensson

    EXPERIMENTAL BRAIN RESEARCH   212 ( 2 )   199 - 212   2011.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

    Corticomotor pathways may undergo neuroplastic changes in response to acquisition of new motor skills. Little is known about the motor control strategies for learning new tongue tasks. The aim of this study was to investigate the longitudinal effect of novel tongue-task training on corticomotor neuroplasticity. Thirteen healthy, right-handed men, aged 24-35 years (mean age +/- A SD: 27.3 +/- A 0.3 years), performed a training task consisting of standardized tongue protrusion onto a force transducer. The tongue task consisted of a relax-protrude-hold-relax cycle with 1.0 N as the target at the hold phase lasting for 1.5 s. Subjects repeated this task for 1 h. Functional magnetic resonance imaging was carried out before the tongue-task training (baseline), 1-h after the training, and one-day and one-week follow-up. During scanning, the subjects performed tongue protrusion in blocks interspersed with rest. A region-of-interest (ROI) approach and an explorative search were implemented for the analysis of corticomotor activity across conditions. All subjects completed the tongue-task training (mean success rate 43.0 +/- A 13.2%). In the baseline condition, tongue protrusion resulted in bilateral activity in regions most typically associated with a motor task including medial frontal gyrus (supplementary motor area [SMA]), precentral gyrus (tongue motor cortex), putamen, thalamus, and cerebellum. The ROI analysis revealed increased activity in the precentral gyrus already 1 h post-training. One day after the training, increased activity was observed in the precentral gyrus, SMA, putamen, and cerebellum. No increase was found 1 week after training. Correlation analyses between changes in success rates and changes in the numbers of voxels showed robust associations for left Area 4a in primary motor cortex 1 h, 1 day, and 1 week after the tongue-task training and for the left Area 4p in primary motor cortex and the left lateral premotor cortex 1 day after the training. In the unrestricted analysis, increased activity was found in the parahippocampal gyrus 1 h after the tongue-task training and remained for a week. Decreased activity was found in right post-central and middle frontal gyri 1 h and 1 week post-training. The results verified the involvement of specific corticomotor areas in response to tongue protrusion. Short-term tongue-task training was associated with longer-lasting (up to 1 week) changes in motor-related brain activity. The results suggested that primary motor areas are involved in the early and late stages, while other motor areas mainly are engaged in the later stage of corticomotor neuroplasticity of the tongue.

    DOI: 10.1007/s00221-011-2719-7

    Web of Science

    researchmap

  • SALIVARY STRESS BIOMARKER LEVELS DURING SPEECH IN PATIENTS WITH MAXILLECTOMY DEFECT Reviewed

    Yukiko Ugawa, Goro Nishigawa, Yukinori Maruo, Michihiro Suwaki, Shogo Minagi

    HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK   33 ( 5 )   620 - 626   2011.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY-BLACKWELL  

    Background. After resection of maxillofacial tumors, severe functional problems related to mastication, deglutition, and speech are observed in addition to the changes in appearance and psychosocial functioning. Although speech outcome is recovered with prosthetic treatments, patients sometimes complain of continued dissatisfaction with their speech. The purpose of this study was to evaluate the potential dissatisfaction of patients with maxillectomy defects during speech.
    Methods. Sixteen patients with maxillary obturator were compared with a matched control group. Functional improvement by the maxillofacial prosthesis was confirmed using a speech intelligibility test, a chewing function score, and visual analogue scale on subjective satisfaction. Cortisol and chromogranin A (CgA) were evaluated after prescribed speech tasks.
    Results. CgA in patients with maxillectomy defects was significantly higher than that in the control group (p &lt; .05), even after the functional improvement by maxillofacial prosthesis.
    Conclusion. It was revealed that patients with maxillectomy defects have significant psychological stresses during speech, even when their maxillofacial prosthesis resulted in successful functional improvement. (C) 2010 Wiley Periodicals, Inc. Head Neck 33: 620-626, 2011

    DOI: 10.1002/hed.21508

    Web of Science

    PubMed

    researchmap

  • Self-etch Monomer-Calcium Salt Deposition on Dentin Reviewed

    K. Yoshihara, Y. Yoshida, S. Hayakawa, N. Nagaoka, Y. Torii, A. Osaka, K. Suzuki, S. Minagi, B. Van Meerbeek, K.L. Van Landuyt

    Journal of Dental Research   90 ( 5 )   602 - 606   2011.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SAGE Publications  

    DOI: 10.1177/0022034510397197

    researchmap

    Other Link: http://journals.sagepub.com/doi/full-xml/10.1177/0022034510397197

  • Stress distribution prevents ischaemia and bone resorption in residual ridge Reviewed

    Yukinori Maruo, Goro Nishigawa, Masao Irie, Morihiko Oka, Tetsuya Hara, Kazuomi Suzuki, Shogo Minagi

    ARCHIVES OF ORAL BIOLOGY   55 ( 11 )   873 - 878   2010.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

    Objective: Intensive mechanical stress and/or inflammation are known to induce alveolar bone resorption. This study investigated whether a distribution of mechanical stress would reduce residual ridge resorption or improve ischaemia.
    Design: Thirty rats were divided into six experimental groups (n = 5). The control group received no intentional stimulation, but rats in the experimental groups wore denture stimulators made of acrylic resin or a soft lining material. The stimulator transmitted masticatory pressure to the rats&apos; palates for four weeks. The four types of soft lining materials investigated in this study dispersed the applied pressure, with compressive stress ranging from 20.8 to 90.8 kPa. Volumes of blood flow and bone resorption of denture foundations were measured every week for 4 weeks. Statistical evaluation of these results was performed using two-way ANOVA and Holm-Sidak test within 5% error limits.
    Results: Non-viscoelastic material clearly induced bone resorption and ischaemia of denture foundations, while viscoelastic materials reduced these phenomena to different extents according to their viscoelastic properties. Ischaemia in the alveolar ridge preceded residual ridge resorption, because the amount of residual ridge resorption and blood flow rate showed a simple linear regression.
    Conclusion: Animal model of this study suggested that a distribution or reduction of mechanical stress could improve blood flow and decrease alveolar ridge resorption. (C) 2010 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.archoralbio.2010.07.022

    Web of Science

    researchmap

  • 合着用グラスアイオノマーセメントの曲げ特性 サーマルサイクル負荷による影響

    入江 正郎, 玉田 宜之, 岡 森彦, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 鈴木 一臣

    特定非営利活動法人日本歯科保存学会学術大会プログラムおよび講演抄録集   133回   123 - 123   2010.10

     More details

    Language:Japanese   Publisher:(NPO)日本歯科保存学会  

    researchmap

  • Nano-controlled molecular interaction at adhesive interfaces for hard tissue reconstruction. Reviewed

    Yoshihara K, Yoshida Y, Nagaoka N, Fukegawa D, Hayakawa S, Mine A, Nakamura M, Minagi S, Osaka A, Suzuki K, Van Meerbeek B

    Acta biomaterialia   6 ( 9 )   3573 - 3582   2010.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCI LTD  

    Although decayed/fractured teeth can be reconstructed minimally invasively and nearly invisibly using adhesive technology, the clinical longevity of dental composite restorations is still too short. Water sorption is thought to be the principal cause of destabilization of the biomaterial-tooth bond. However, the actual mechanisms of interfacial degradation are far from understood. Here we report how nano-controlled molecular interaction at the biomaterial-hard tissue interface can improve bond durability. The use of functional monomers with a strong chemical affinity for the calcium in hydroxyapatite is essential for long-term durability. Correlative X-ray diffraction and solid-state nuclear magnetic resonance disclosed a time-dependent molecular interaction at the interface with stable ionic bond formation of the monomer to hydroxyapatite competing in time with the deposition of less stable calcium phosphate salts. The advanced tooth-biomaterial interaction model gives not only an insight into the mechanisms of bond degradation, but also provides a basis to develop functional monomers for more durable tooth reconstruction. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.actbio.2010.03.024

    Web of Science

    PubMed

    researchmap

  • スプリント療法ガイドラインの確立 Reviewed

    皆木 省吾, 築山 能大, 有馬 太郎, Tetsuo Ichikawa, 窪木 拓男, 兒玉 直紀, 佐久間 重光, 新谷 明喜, 高津 匡樹, 竹内 哲男, 津賀 一弘, 坪井 明人, 中島 啓一朗, Masanori Nakano, 成田 紀之, 波多野 泰夫, 藤澤 政紀, 船登 雅彦, 鱒見 進一, Yoshizo Matsuka

    Journal of the Japanese Association for Dental Science   Vol.29 ( No.29 )   62 - 66   2010.3

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    CiNii Article

    researchmap

  • Role of the low-density lipoprotein receptor-related protein-1 in regulation of chondrocyte differentiation. Reviewed International journal

    Kawata K, Kubota S, Eguchi T, Moritani NH, Shimo T, Kondo S, Nishida T, Minagi S, Takigawa M

    Journal of cellular physiology   222 ( 1 )   138 - 148   2010.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:1  

    The low-density lipoprotein receptor-related protein 1 (LRP1) is known as an endocytic and signal transmission receptor. We formerly reported the gene expression and the localization of LRP1 in cartilage tissue and chondrocytes, but its roles in the differentiation of chondrocytes remained to be investigated. Here, in order to address this issue, we employed RNAi strategy to knockdown lrp1 in chondrocytic cells and obtained findings indicating a critical role therein. As a result of lrp1 knockdown, aggrecan and col2a1 mRNA levels were decreased. However, that of col10a1 or mmp13 mRNA was rather increased. Under this condition, we performed a promoter assay for Axin2, which is known to be induced by activation of the WNT/beta-catenin (betacat) signaling pathway. Thereby, we found that Axin2 promoter activity was enhanced in the lrp1 knockdown cells. Furthermore, when the WNT/beta-catenin pathway was activated in chondrocytic cells by WNT3a or SB216763, which inhibits the phosphorylation of GSK3beta, the mRNA levels of aggrecan and col2a1 were decreased, whereas that of mmp13 was increased. Additionally, the level of phosphorylated protein kinase C (PKC) zeta was also decreased in the lrp1 knockdown cells. When the phosphorylation of PKCzeta was selectively inhibited, aggrecan and col2a1 mRNA levels decreased, whereas the mmp13 mRNA level increased. These data demonstrate that LRP1 exerts remarkable effects to retain the mature phenotype of chondrocytes as a critical mediator of cell signaling. Our findings also indicate that the onset of hypertrophy during endochondral ossification appears to be particularly dependent on the WNT and PKC signaling initiated by LRP1.

    DOI: 10.1002/jcp.21930

    PubMed

    researchmap

  • 顎関節症のスプリント治療に関する実態調査 大学病院顎関節症外来および一般開業歯科医院における診療時間の比較 Reviewed

    兒玉 直紀, 築山 能大, 有馬 太郎, Tetsuo Ichikawa, 窪木 拓男, 佐久間 重光, 新谷 明喜, 高津 匡樹, 津賀 一弘, 坪井 明人, Masanori Nakano, 成田 紀之, 波多野 泰夫, 藤澤 政紀, 船登 雅彦, 鱒見 進一, Yoshizo Matsuka, 皆木 省吾

    Journal of the Japanese Society for the Temporomandibular Joint   Vol.21 ( No.3 )   222 - 227   2009.12

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.11246/gakukansetsu.21.222

    CiNii Article

    researchmap

  • 低密度リポタンパク受容体関連タンパク-1(LRP1)の軟骨細胞分化における多面的作用機構

    河田 かずみ, 久保田 聡, 江口 傑徳, 青山 絵理子, 森谷 徳文, 近藤 誠二, 西田 崇, 皆木 省吾, 滝川 正春

    日本生化学会大会プログラム・講演要旨集   82回   4T4p - 9   2009.9

     More details

    Language:Japanese   Publisher:(公社)日本生化学会  

    researchmap

  • サンドブラスト処理用アルミナ粒子の残留がレジンセメントの接着力と曲げ特性に及ぼす影響

    西川 悟郎, 丸尾 幸憲, 岡 森彦, 玉田 宜之, 皆木 省吾, 入江 正郎, 鈴木 一臣

    歯科材料・器械   28 ( 5 )   327 - 327   2009.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 低密度リポタンパク受容体関連タンパク-1(LRP1)の軟骨細胞分化における機能とその作用機構

    河田 かずみ, 久保田 聡, 江口 傑徳, 青山 絵理子, 森谷 徳文, 近藤 誠二, 西田 崇, 皆木 省吾, 滝川 正春

    日本骨代謝学会学術集会プログラム抄録集   27回   179 - 179   2009.7

     More details

    Language:Japanese   Publisher:(一社)日本骨代謝学会  

    researchmap

  • カーボンファイバーによるレジンコンポジットの補強効果

    丸尾 幸憲, 入江 正郎, 西川 悟郎, 玉田 宜之, 岡 森彦, 森 慎吾, 皆木 省吾, 鈴木 一臣

    歯科材料・器械   28 ( 2 )   60 - 60   2009.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 岡山大学歯学部戦略的計画 求められている今後の対応策 Reviewed

    Yoshizo Matsuka, 池亀 美華, 吉田 登志子, 有馬 太郎, 皆木 省吾, 山本 敏男, 高柴 正悟, 窪木 拓男, 北山 滋雄, 滝川 正春, 松尾 龍二

    The Journal of Okayama Dental Society   Vol.28 ( No.2 )   123 - 130   2009

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    researchmap

  • エアブラシ・メイクアップによるエピテーゼ辺縁の不顕化処理

    鵜川 由紀子, 神 桂二, 太田 圭二, 牧野 エミ, 丸尾 幸憲, 西川 悟郎, 神尾 和加子, 皆木 省吾

    岡山歯学会雑誌   27 ( 1 )   65 - 65   2008.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • レジンセメントのジルコニアに対する接着強さ(その2) 長期サーマルサイクル負荷の影響

    入江 正郎, 岡 森彦, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 鈴木 一臣

    日本補綴歯科学会雑誌   52 ( 2 )   264 - 264   2008.4

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 睡眠時無呼吸における体位の影響

    長谷川 浩一, 西川 悟郎, 丸尾 幸憲, 岡 森彦, 洲脇 道弘, 豊田 眞仁, 皆木 省吾

    日本補綴歯科学会雑誌   52 ( 2 )   263 - 263   2008.4

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • コンポジットレジン修復における硬化初期のI級窩洞適合性 硬化収縮と歯質接着性の関係について

    入江 正郎, 鄂 麗華, 岡 森彦, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 鈴木 一臣

    歯科材料・器械   27 ( 2 )   154 - 154   2008.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • われわれの行っているインプラント治療の臨床的検討

    高木 愼, 水川 展吉, 福永 城司, 菅原 利夫, 完山 学, 窪木 拓男, 丸尾 幸憲, 皆木 省吾

    岡山歯学会雑誌   26 ( 1 )   49 - 50   2007.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 視覚的観察を可能とした印象圧測定装置の精度

    西川 悟郎, 丸尾 幸憲, 岡 森彦, 皆木 省吾, 入江 正郎, 鈴木 一臣

    歯科材料・器械   26 ( 2 )   136 - 136   2007.4

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • レジンセメントのジルコニアに対する接着強さの検討

    入江 正郎, 岡 森彦, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 鈴木 一臣

    日本補綴歯科学会雑誌   51 ( 2 )   366 - 366   2007.4

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • ジルコニアとレジンセメントの接着に対するCO2レーザーの影響

    丸尾 幸憲, 入江 正郎, 西川 悟郎, 岡 森彦, 皆木 省吾, 鈴木 一臣

    歯科材料・器械   26 ( 2 )   123 - 123   2007.4

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 顎義歯装着者の発音時における唾液中ストレス指標物質の動態

    鵜川 由紀子, 西川 悟郎, 丸尾 幸憲, 岡本 信, 洲脇 道弘, 皆木 省吾

    日本補綴歯科学会雑誌   50 ( 115回特別 )   103 - 103   2006.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 多数歯欠損を伴った骨格性下顎前突症に対し矯正歯科,補綴科,口腔外科が協同で顎矯正治療を行った1例

    小野 達生, 西山 明慶, 吉岡 徳枝, 神野 時有, 岡本 信, 皆木 省吾, 佐々木 朗

    日本顎変形症学会雑誌   16 ( 2 )   112 - 112   2006.5

     More details

    Language:Japanese   Publisher:(NPO)日本顎変形症学会  

    researchmap

  • インプラントのスクリュー締結時に生じる周囲骨組織の歪がオッセオインテグレーションに与える影響

    守屋 佳典, 丸尾 幸憲, 岡 森彦, 皆木 省吾

    日本口腔インプラント学会誌   19 ( 1 )   30 - 31   2006.3

     More details

    Language:Japanese   Publisher:(公社)日本口腔インプラント学会  

    researchmap

  • 二次骨化中心形成過程に発現する結合組織成長因子CTGF/CCN2のパールカン陽性軟骨細胞への特異的集積

    岡 森彦, 久保田 聡, 近藤 誠二, 江口 傑徳, 河田 かずみ, 黒田 知沙, 皆木 省吾, 滝川 正春

    日本骨代謝学会学術集会プログラム抄録集   23回   229 - 229   2005.6

     More details

    Language:Japanese   Publisher:(一社)日本骨代謝学会  

    researchmap

  • カスタムトレーと合成ゴム質印象材の接着強さに関する研究

    丸尾 幸憲, 新野 良哉, 西川 悟郎, 岡 森彦, 鈴木 雄一郎, 守屋 佳典, 花田 俊士, 皆木 省吾, 鈴木 一臣, 入江 正郎

    日本補綴歯科学会雑誌   49 ( 113回特別 )   179 - 179   2005.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • プラズマ照射による被着面処理が義歯床用材料と即時重合レジンの接着強さに与える影響

    新野 良哉, 丸尾 幸憲, 西川 悟郎, 岡 森彦, 鈴木 雄一郎, 守屋 佳典, 森 慎吾, 崎谷 公子, 皆木 省吾, 鈴木 一臣, 入江 正郎

    日本補綴歯科学会雑誌   48 ( 5 )   879 - 879   2004.12

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 中空型栓塞子に付与する脱離防止機能を備えたスクリュー・キャップ

    西川 悟郎, 丸尾 幸憲, 岡本 信, 衣田 圭宏, 沖 和広, 皆木 省吾

    日本補綴歯科学会雑誌   47 ( 5 )   905 - 905   2003.12

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • ホーム・リライナーの使用による義歯床下粘膜の形態変化

    西川 悟郎, 丸尾 幸憲, 岡本 信, 岡 森彦, 皆木 省吾, 松永 匡司

    日本補綴歯科学会雑誌   47 ( 110回特別 )   90 - 90   2003.10

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 義歯安定剤の使用による上顎総義歯の偏位

    西川 悟郎, 丸尾 幸憲, 岡 森彦, 岡本 信, 皆木 省吾, 松永 匡司

    日本補綴歯科学会雑誌   47 ( 109回特別 )   100 - 100   2003.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 義歯床と粘膜の温度差を利用した直接リライニング法 義歯床と義歯床下粘膜の適合度

    高橋 修平, 大澤 崇, 岡 森彦, 丸尾 幸憲, 西川 悟郎, 衣田 圭宏, 沖 和広, 角谷 真一, 中島 啓一朗, 松永 匡司, 皆木 省吾

    日本補綴歯科学会雑誌   46 ( 5 )   811 - 811   2002.12

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 【目で見る咬合の基礎知識】チェックバイト法

    丸尾 幸憲, 皆木 省吾, 長谷川 浩一

    歯科技工   別冊 ( 目で見る咬合の基礎知識 )   158 - 159   2002.6

     More details

    Language:Japanese   Publisher:医歯薬出版(株)  

    researchmap

  • アルジネート印象材の粘弾性に関する感覚的評価

    丸尾 幸憲, 島村 政行, 西川 悟郎, 岡本 信, 長谷川 浩一, 谷本 裕子, 皆木 省吾, 佐藤 隆志

    日本補綴歯科学会雑誌   44 ( 6 )   868 - 868   2000.12

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

▼display all

Books

  • ライフステージを見据えた高齢者の補綴治療

    医歯薬出版  2017  ( ISBN:9784263445075

     More details

  • 食塊粒度解析による咀嚼能力検査(食塊粒度解析法)

    医歯薬出版  2017  ( ISBN:9784263444894

     More details

  • 咬合の機能診断

    医歯薬出版  2017  ( ISBN:9784263444894

     More details

  • 月刊「歯界展望」別冊 補綴装置および歯の延命のための 最新治療指針

    医歯薬出版  2016 

     More details

  • 無歯顎補綴治療学

    医歯薬出版  2016  ( ISBN:9784263457924

     More details

  • Martin Gross著 The Science and Art of Occlusion and Oral Rehabilitation 咬合のサイエンスとアート

    クインテッセンス出版  2016  ( ISBN:9784781205069

     More details

  • 写真と図で使える 超高齢者総義歯座右マニュアル

    皆木 省吾( Role: Sole author)

    学術研究出版/BookWay  2015.4  ( ISBN:4865840303

     More details

    Total pages:156  

    ASIN

    researchmap

  • 災害時の歯科保健医療対策

    一世出版株式会社  2015  ( ISBN:9784870781795

     More details

  • Okayama Complete Denture Manual for oldest old edentulous patient

    2015  ( ISBN:9784865840308

     More details

  • 超高齢者総義歯座右マニュアル

    学術研究出版  2015  ( ISBN:9784865840308

     More details

  • Dental health care necessity in a time of disaster

    Issei Publishing Co.  2015  ( ISBN:9784870781795

     More details

  • 総義歯治療 失敗回避のためのポイント45

    鱒見 進一, 大久保 力廣, 皆木 省吾, 水口 俊介, 鱒見 進一, 大久保 力廣, 皆木 省吾, 水口 俊介( Role: Joint author)

    クインテッセンス出版  2014.9  ( ISBN:4781203884

     More details

    Total pages:184  

    ASIN

    researchmap

  • 総義歯治療失敗回避のためのポイント45-なぜ合わないのか、なぜ噛めないのか-

    クインテッセンス出版  2014 

     More details

  • プロソドンティクス第Ⅰ巻

    永末書店  2012  ( ISBN:9784816012365

     More details

  • 写真でマスターする顎関節症治療のためのスプリントのつくり方・つかい方

    鱒見進一, 皆木省吾( Role: Joint author)

    ヒョーロン・パブリッシャーズ  2011.2  ( ISBN:4864320004

     More details

    Total pages:96  

    ASIN

    researchmap

  • Functional Occlusion

    医歯薬出版株式会社  2010 

     More details

  • チェアーサイド歯科英会話

    吉備人出版  2010 

     More details

  • At the Chairside: English Conversation in Dentistry

    2010 

     More details

  • バウチャー 無歯顎患者の補綴治療

    医歯薬出版,東京  2009 

     More details

  • バウチャー 無歯顎患者の補綴治療

    医歯薬出版,東京  2008 

     More details

  • 補綴臨床Practice Selection入門 無歯顎補綴治療

    河野 文昭, 鱒見 進一, 皆木 省吾, 市川 哲雄( Role: Joint author)

    医歯薬出版  2006.7  ( ISBN:4263464044

     More details

    Total pages:160  

    ASIN

    researchmap

  • 診断力てすと 第3集

    デンタルダイヤモンド社  2004 

     More details

  • 日本学術会議咬合学研究連絡委員会

    日本学術会議,東京  2004 

     More details

  • 診断力てすと 第3集

    デンタルダイヤモンド,東京  2004 

     More details

  • 無歯顎補綴治療学

    医歯薬出版  2004 

     More details

  • 平成15-16年度科学研究費補助金(基盤研究C2)研究成果報告書

    2004 

     More details

  • 目で見る咬合の基礎知識

    医歯薬出版,東京  2002 

     More details

  • 顎関節症入門

    医歯薬出版株式会社  2001 

     More details

  • Standard Textbook of Dentistry ・ Complete Denture

     More details

  • 平成17-18年度科学研究費補助金(基盤研究B)研究成果報告書

     More details

  • 平成16-17年度科学研究費補助金(基盤研究C2)研究成果報告書

     More details

  • Standard Textbook of Dentistry ・ Complete Denture

     More details

  • 平成17-18年度科学研究費補助金(基盤研究B)研究成果報告書

     More details

  • 標準補綴学総論・コンプリートデンチャー

    医学書院 

     More details

▼display all

MISC

  • レボフロキサシンによる固定薬疹が疑われた口腔粘膜疾患の1例

    坂本 隼一, 原 哲也, 皆木 省吾

    老年歯科医学   35 ( 4 )   401 - 401   2021.3

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • グラスアイオノマーの唾液汚染による歯質接着強さの特徴 コンポジットレジンシステムとの比較

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   40 ( Special Issue77 )   22 - 22   2021.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • レボフロキサシンによる固定薬疹が疑われた口腔粘膜疾患の1例

    坂本 隼一, 原 哲也, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   31回   148 - 148   2020.11

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • PAPを用いた早期介入が口腔機能回復に及ぼす影響に関するランダム化比較試験

    横山 友徳, 長塚 弘亮, 矢野 実郎, 川上 滋央, 花山 耕三, 皆木 省吾

    言語聴覚研究   17 ( 3 )   231 - 232   2020.9

     More details

    Language:Japanese   Publisher:(一社)日本言語聴覚士協会  

    researchmap

  • 新規セルフアドヒーシヴ・レジンセメントの接着性からの検討 プライマー併用効果、Self-cure vs.Dual-cure

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    接着歯学   38 ( 3 )   111 - 111   2020.9

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 唾液汚染除去材処理がセラミックスの接着強さに与える影響

    萬田 陽介, 入江 正郎, 丸尾 幸憲, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 松本 卓也, 皆木 省吾

    日本補綴歯科学会誌   12 ( 特別号 )   171 - 171   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 蛍光ラベリングによるカップリングモノマー可視化技術の開発

    西川 悟郎, 丸尾 幸憲, 長岡 紀幸, 吉原 久美子, 徳永 英里, 入江 正郎, 皆木 省吾

    日本補綴歯科学会誌   12 ( 特別号 )   210 - 210   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 日本の29歯科大学における全部床義歯補綴教育に関する実態調査

    岩城 麻衣子, 金澤 学, 兒玉 直紀, 松田 謙一, 池邉 一典, 皆木 省吾, 水口 俊介

    日本補綴歯科学会誌   12 ( 特別号 )   250 - 250   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 有床義歯装着者のための美味しい食力維持レシピの提案

    岡本 信, 井上 誠太, 安部 克, 熊谷 元希, 坂本 秀輝, 藤井 靖子, 村上 あすか, 森 慎吾, 伊藤 由紀子, 徳永 英里, 北川 佳祐, 前田 直人, 沖 和広, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   12 ( 特別号 )   258 - 258   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • アルツハイマーモデルマウスを用いた咬合支持の欠如によるアミロイドβ沈着の変化

    村上 明日香, 原 哲也, 山田 知枝, 桑原 実穂, 荒木 大介, 皆木 省吾

    日本補綴歯科学会誌   12 ( 特別号 )   202 - 202   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • PAPを用いたごく早期介入が口腔機能回復に及ぼす影響に関するランダム化比較試験

    横山 友徳, 長塚 弘亮, 矢野 実郎, 佐藤 匡晃, 川上 滋央, 花山 耕三, 皆木 省吾

    日本補綴歯科学会誌   12 ( 特別号 )   84 - 84   2020.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 臼歯修復用手動練和型のグラスアイオノマーセメント I級窩洞適合性と歯質接着強さ

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   39 ( Special Issue75 )   17 - 17   2020.4

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 構音を利用した舌後方部筋活動標準化の一手法 咀嚼・嚥下時の舌運動客観評価のために

    萬田 陽介, 兒玉 直紀, 前田 直人, 川上 滋央, 森 慧太朗, 北川 佳祐, 古寺 寛志, 皆木 省吾

    日本顎口腔機能学会雑誌   26 ( 2 )   122 - 123   2020.3

  • 構音を利用した舌後方筋活動の標準化方法の検討

    萬田 陽介, 兒玉 直紀, 前田 直人, 川上 滋央, 森 慧太朗, 北川 佳祐, 古寺 寛志, 皆木 省吾

    岡山歯学会雑誌   38 ( 2 )   88 - 89   2019.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 新しい練和方式の合着用レジン添加型グラスアイオノマーセメント 接着強さと曲げ特性

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   38 ( Special Issue74 )   22 - 22   2019.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 蛍光タンパクを用いたカップリングモノマー可視化技術の開発

    西川 悟郎, 丸尾 幸憲, 長岡 紀幸, 吉原 久美子, 徳永 英里, 入江 正郎, 皆木 省吾

    日本歯科理工学会誌   38 ( Special Issue74 )   66 - 66   2019.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 下顎偏位時における舌の三次元的位置解析

    徳善 貴大, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 11   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 実験的に惹起した心理的ストレスが歯根膜感覚に及ぼす影響

    宋本 儒享, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 9   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • BMP-2含有光重合型PDVAで補強したコラーゲンスポンジによる吸収性骨補填材

    山田 知枝, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 9   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 実験的に惹起した心理的ストレスが歯根膜感覚に及ぼす影響

    宋本 儒享, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 9   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    顎関節症に関連した疼痛の増悪・持続因子としての歯列接触癖(TCH)の重要性が認知されつつある。TCH発生時には上下顎歯列咬合面間において弱い咬合力が長時間発揮された状態が持続すると考えられる。咬合力の強さは、咬合力によって歯根膜線維に発生したひずみが歯根膜線維に分布する機械受容器によって検知される。歯根膜機械受容器を介した歯に対する力の体性感覚(歯根膜感覚)については、心理物理学的手法を用いた検討が多くなされているが、心理的ストレスが歯根膜感覚閾値に及ぼす影響については明らかにされていない。今回、暗算負荷を用いた心理的ストレス負荷前後における歯根膜感覚絶対閾値(ATPS)の変化について健常成人20名を対象に検討した。結果、心理的ストレスによってATPSは有意に増加することが明らかになった。

    researchmap

  • BMP-2含有光重合型PDVAで補強したコラーゲンスポンジによる吸収性骨補填材

    山田 知枝, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 9   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    コラーゲンスポンジのコラーゲン繊維にBMP-2含有重合型DVA(アジピン酸ジビニル)をコーティングし光重合処理で作製した試料の吸収性骨補填材としての可能性について評価するため、細胞毒性試験、骨石灰化実験、3点曲げ試験、動物埋入試験を行った。その結果、本試料は生体適合性と骨伝導性およびBMP-2徐放による骨伝導性を示し、骨補填材ならびにBMP-2担体として有用と考えられた。

    researchmap

  • 下顎偏位時における舌の三次元的位置解析

    徳善 貴大, 皆木 省吾

    岡山歯学会雑誌   38 ( 1 )   1 - 11   2019.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    下顎歯列と舌の位置関係を再現した石膏模型を作製し、これを用いて下顎偏位時の舌の位置を三次元的に評価することを試みた。結果、下顎歯列と舌の位置関係を高い精度で再現でき、三次元的評価により下顎側方偏心位において偏位側の舌と歯列の距離が増大し、非偏位側の舌縁が上方に傾くことなどが示唆された。

    researchmap

  • 新しい器械式練和の充填用グラスアイオノマーセメント I級窩洞適合性と歯質接着強さ

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   38 ( Special Issue73 )   62 - 62   2019.4

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 咀嚼条件による舌後方部および咀嚼関連筋群の活動パターン(第一報)

    森 慧太朗, 萬田 陽介, 兒玉 直紀, 前田 直人, 北川 佳祐, 長谷川 萌, 皆木 省吾

    日本顎口腔機能学会雑誌   25 ( 2 )   120 - 121   2019.3

  • 食塊粒度解析から判明した義歯装着高齢者の咀嚼の特徴

    杉本 皓, 田中 祐貴, 兒玉 直紀, 皆木 省吾

    岡山歯学会雑誌   37 ( 2 )   85 - 85   2018.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 義歯装着高齢者と健常者における咀嚼進行に伴う食塊粒度特性の差

    杉本皓, 田中祐貴, 杉本恭子, 皆木省吾

    日本咀嚼学会雑誌   28 ( 2 )   85 - 85   2018.11

     More details

    Language:Japanese   Publisher:(NPO)日本咀嚼学会  

    J-GLOBAL

    researchmap

  • Denture modification and adjustment for confortable mastication

    兒玉直紀, 皆木省吾

    日本補綴歯科学会誌(Web)   10 ( 4 )   308‐313(J‐STAGE) - 313   2018.10

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    超高齢社会においては、義歯関連治療の特徴的なニーズがある。すなわち高齢化や障害のために義歯への適応力が低下した患者であるにも関わらず、義歯調整であれば処置の即効性と永続性が、新義歯作製であればすぐに適応してくれる義歯の作製が望まれる。このような場面での義歯関連治療はシンプルにかつ高いレベルで行われる必要がある。総義歯患者が比較的若かった過去の時代と比較すると、患者年齢層高齢化に起因する口腔周囲筋群の巧緻性低下と食介護を想定した総義歯治療の新たな概念が必要とされている。このような背景に適合した義歯概念と診断法を適切に組み合わせれば、超高齢者の総義歯治療は論理的かつ確実に効果をあげることができる。(著者抄録)

    DOI: 10.2186/ajps.10.308

    CiNii Article

    J-GLOBAL

    researchmap

  • 大臼歯用CAD/CAMブロックに対するレジンセメントの接着強さの検討

    入江 正郎, 徳永 英里, 丸尾 幸憲, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   36 ( 3 )   98 - 98   2018.10

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 新しい器械式練和の充填用グラスアイオノマーセメントの歯質接着性と曲げ特性

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   37 ( Special Issue72 )   89 - 89   2018.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 新しい器械式練和の充填用グラスアイオノマーセメントの歯質接着性と曲げ特性

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   37 ( Special Issue72 )   89 - 89   2018.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • Relationship between severity of periodontitis and masseter muscle activity during waking and sleeping hours International journal

    Seiya Kato, Daisuke Ekuni, Shigehisa Kawakami, Acing Habibie Mude, Manabu Morita, Shogo Minagi

    Archives of Oral Biology   90   13 - 18   2018.6

     More details

    Language:English   Publisher:Elsevier Ltd  

    Objective: This study was conducted to investigate whether the masseter muscle activity shows any specific pattern in relation to the severity of periodontitis. Design: Sixteen subjects with no or mild periodontitis (NMP group) and 15 subjects with moderate or severe periodontitis (MSP group) were enrolled. Plasma IgG antibody titer was examined using Porphyromonas gingivalis as a bacterial antigen. Surface electromyography (EMG) of the masseter muscles was continuously recorded using an ambulatory surface EMG recording device while patients were awake and asleep. Masseter muscle activity was analyzed using intensities of 5%–10% maximal voluntary clenching (MVC), 10%–20% MVC, and &gt
    20% MVC. Furthermore, EMG levels of 20% MVC were adopted as the threshold for analysis of phasic, tonic, and mixed EMG activities. The cumulative duration of masseter muscle activity and bruxism episodes was calculated as duration per hour. Results: There was no significant difference in plasma IgG antibody titers against P. gingivalis between the NMP and MSP groups (p = 0.423). During waking hours, the duration of masseter muscle activity with an intensity of &gt
    20% MVC was significantly longer in the MSP group than in the NMP group (p = 0.037). During sleeping hours, the duration of masseter muscle activity at all MVC intensities was significantly longer in the MSP group than in the NMP group (all p &lt
    0.05). Additionally, the duration of phasic and mixed episodes was significantly longer in the MSP group than those in the NMP group while both awake and asleep (all p &lt
    0.05). Conclusions: The results of this study suggested that masseter muscle activity might be related to the severity of periodontitis.

    DOI: 10.1016/j.archoralbio.2018.02.021

    Scopus

    PubMed

    researchmap

  • 下顎偏位時における舌の三次元的位置解析

    徳善貴大, 兒玉直紀, 長塚弘亮, 村上明日香, 田中祐貴, 松本卓也, 皆木省吾

    日本補綴歯科学会誌(Web)   10 ( 特別号 )   260 (WEB ONLY) - 260   2018.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    J-GLOBAL

    researchmap

  • デジタル技術を臼歯部人工歯排列位置決定に応用したCAD/CAM全部床義歯の症例

    岡本信, 坂本秀輝, 黒瀬隆文, 井上誠太, 守屋佳典, 森慎吾, 森慎吾, 鵜川由紀子, 洲脇道弘, 前田直人, 山本美恵, 橋本有希, 沖和広, 西川悟郎, 黒川元宏, 皆木省吾

    日本補綴歯科学会誌(Web)   10 ( 特別号 )   151 (WEB ONLY) - 151   2018.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    DOI: 10.2186/ajps.10.151

    J-GLOBAL

    researchmap

  • BMP2含有光重合型PDVAで補強したコラーゲンスポンジによる吸収性骨補填材

    山田 知枝, 原 哲也, 田仲 持郎, 清瀧 優也, 村上 明日香, 桑原 実穂, 伊志嶺 知沙, 坂本 隼一, 荒木 大介, 田, 玉田 祥与, 宮崎 貴子, 皆木 省吾

    日本補綴歯科学会誌   10 ( 特別号 )   272 - 272   2018.6

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Properties of tonic episodes of masseter muscle activity during waking hours and sleep in subjects with and without history of orofacial pain

    Acing Habibie Mude, Shigehisa Kawakami, Seiya Kato, Shogo Minagi

    Journal of Prosthodontic Research   62 ( 2 )   234 - 238   2018.4

     More details

    Language:English   Publisher:Elsevier Ltd  

    Purpose: To provide a scientific data related to the tonic activity of masseter muscle in subjects with and without history of orofacial pain during their normal daily life. Methods: Thirty-three subjects were divided into two groups, a pain history group (PHG) and a non-pain history group (non-PHG), based on their responses to the Research Diagnostic Criteria for Temporomandibular Disorders questionnaire. After excluding four subjects with incomplete recordings, full-day masseter muscle surface EMGs of 29 subjects (10 men, 19 women
    mean age 24.1 years) were analyzed. Tonic episode (TE) was defined as continuous EMG activity with a duration at least 2 s with intensities above twice the baseline noise level. TEs were classified into 6 strength categories (&lt
    7.5%, 7.5–10%, 10–15%, 15–25%, 25–40% and &gt
    40% of the maximum voluntary clenching (MVC)). The mean duration of activity observed in the non-PHG + 2 SD was adopted as a cutoff for identifying sustained TE. Results: During waking hours, the incidence of sustained TEs was significantly higher in the PHG than in the non-PHG (p &lt
    0.05). The incidence and total duration of sustained TEs were significantly higher in the PHG than in the non-PHG at intensities of 7.5–10% MVC, 10–15% MVC, and 15–25% MVC (p &lt
    0.05). No significant difference was observed during sleep. Conclusions: Within the limitations of this study, it would be concluded that sustained TEs may have a correlation with orofacial pain and the intensity range of 7.5–25% MVC would be an important range for future clenching studies

    DOI: 10.1016/j.jpor.2017.09.003

    Web of Science

    Scopus

    PubMed

    researchmap

  • Properties of tonic episodes of masseter muscle activity during waking hours and sleep in subjects with and without history of orofacial pain

    Acing Habibie Mude, Shigehisa Kawakami, Seiya Kato, Shogo Minagi

    Journal of Prosthodontic Research   62 ( 2 )   234 - 238   2018.4

     More details

    Language:English   Publisher:Elsevier Ltd  

    Purpose: To provide a scientific data related to the tonic activity of masseter muscle in subjects with and without history of orofacial pain during their normal daily life. Methods: Thirty-three subjects were divided into two groups, a pain history group (PHG) and a non-pain history group (non-PHG), based on their responses to the Research Diagnostic Criteria for Temporomandibular Disorders questionnaire. After excluding four subjects with incomplete recordings, full-day masseter muscle surface EMGs of 29 subjects (10 men, 19 women
    mean age 24.1 years) were analyzed. Tonic episode (TE) was defined as continuous EMG activity with a duration at least 2 s with intensities above twice the baseline noise level. TEs were classified into 6 strength categories (&lt
    7.5%, 7.5–10%, 10–15%, 15–25%, 25–40% and &gt
    40% of the maximum voluntary clenching (MVC)). The mean duration of activity observed in the non-PHG + 2 SD was adopted as a cutoff for identifying sustained TE. Results: During waking hours, the incidence of sustained TEs was significantly higher in the PHG than in the non-PHG (p &lt
    0.05). The incidence and total duration of sustained TEs were significantly higher in the PHG than in the non-PHG at intensities of 7.5–10% MVC, 10–15% MVC, and 15–25% MVC (p &lt
    0.05). No significant difference was observed during sleep. Conclusions: Within the limitations of this study, it would be concluded that sustained TEs may have a correlation with orofacial pain and the intensity range of 7.5–25% MVC would be an important range for future clenching studies

    DOI: 10.1016/j.jpor.2017.09.003

    Scopus

    PubMed

    researchmap

  • Short-term crossover study on the effect of orthogonalized deep- grooved posterior artificial teeth on the masticatory efficiency of complete denture wearers International journal

    Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Hikaru Sugimoto, Shogo Minagi

    Open Dentistry Journal   12   255 - 264   2018.3

     More details

    Language:English   Publisher:Bentham Science Publishers B.V.  

    Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated. Six edentulous participants, 1 male and 5 females, were assigned into two groups. One received duplicated complete dentures with grooved molars first, and the other received duplicated complete dentures with conventional molars first. The design of the teeth was crossover after evaluating masticatory efficiency. Raw carrot, raw lettuce and mixed foodstuffs were used to evaluate masticatory efficiency. Subjects were instructed to masticate 20 strokes and arbitrary strokes until they felt like swallowing. Results: The number of masticatory strokes taken was significantly smaller using the grooved design (p&lt
    .05). Masticatory efficiency analysis revealed that the grooved design achieved significantly higher masticatory efficiency at 20 masticatory strokes for raw carrot and mixed foodstuffs (p&lt
    .05). Conclusion: Results show that compared with conventional lingualized occlusion, the grooved design accomplishes higher masticatory efficiency in vivo. Considering the distinction of this design that it can be applied to any existing denture occlusion, the design might help improve the dietary life of the elderly.

    DOI: 10.2174/1874210601812010255

    Scopus

    PubMed

    researchmap

  • 亜鉛ガラス含有グラスアイオノマーセメントの歯根象牙質の窩洞辺縁部適合性と歯質接着強さ

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 松本 卓也

    日本歯科理工学会誌   37 ( Special Issue71 )   95 - 95   2018.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 舌亜全摘出者の音韻明瞭性改善のためのマルチモーダルデータベースの構築

    村上博紀, 荻野聖也, 原直, 阿部匡伸, 佐藤匡晃, 皆木省吾

    日本音響学会研究発表会講演論文集(CD-ROM)   2018   ROMBUNNO.2‐Q‐32   2018.2

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • Assessment of MRi findings and clinical symptoms in patients with temporomandibular joint disorders International journal

    Risa Matsubara, Yoshinobu Yanagi, Kazuhiro Oki, Miki Hisatomi, Karina CP Santos, Babatunde O Bamgbose, Mariko Fujita, Shunsuke Okada, Shogo Minagi, Junichi Asaumi

    Dentomaxillofacial Radiology   47 ( 4 )   20170412 - 20170412   2018

     More details

    Language:English   Publisher:British Institute of Radiology  

    Objectives: To investigate the correlations among various temporomandibular joint (TMJ) findings on MRI and the relationships between MRI findings and symptoms. Methods: 425 patients (850 TMJs) with temporomandibular joint disorders (TMDs) who underwent MRI were enrolled. Oblique sagittal proton density-weighted and T2 weighted images in open- and closed-mouth positions were evaluated. MRI findings included disc configuration, disc position, condylar morphology, bone marrow pattern, and joint effusion. Symptoms included TMJ pain, TMJ noise, and limitation of mouth opening. For statistical analyses, Spearman's rank correlation coefficient and logistic regression analysis were applied. Results: Folded disc, disc displacement without reduction (DDWOR), and osteophytes had significant negative correlations with other normal MRI findings (p &lt
    0.01). DDWOR and marrow edema were associated with TMJ pain. Conversely, osteophytes [odds ratio (OR): 0.52
    95% CI (0.30-0.90)] and combination-type condylar degeneration [OR: 0.45
    95% CI (0.24-0.83)] were associated with decreased risk of TMJ pain. Condylar flattening was positively associated with TMJ noise [OR: 5.25
    95% CI (1.44-19.07)] and negatively associated with limitation of mouth opening [OR: 0.34
    95% CI (0.11-0.99)]. High-grade joint effusion was significantly associated with TMJ pain and noise. conclusions: DDWOR and high-grade joint effusion (an indicator of inflammation in the articular cavity) were associated with TMD symptoms. This finding suggests that treatment strategy for DDWOR and decreasing inflammation might lessen clinical TMD symptoms. Condylar degeneration was not associated with indicators of inflammation or TMJ symptoms. These results suggest that patients with TMD symptoms should undergo initial MRI to allow rapid selection of appropriate therapies.

    DOI: 10.1259/dmfr.20170412

    Scopus

    PubMed

    researchmap

  • Stage II transportで移送された粒子と咀嚼食塊の粒度は異なるか

    田中祐貴, 杉本皓, 橋本有希, 杉本恭子, 皆木省吾

    日本咀嚼学会学術大会プログラム・抄録集   28th ( 2 )   24 - 83   2017.11

     More details

    Language:Japanese   Publisher:(NPO)日本咀嚼学会  

    J-GLOBAL

    researchmap

  • CAD/CAMレジンブロックに対するシランカップリング剤と加水分解・脱水縮合触媒の影響

    徳永 英里, 長岡 紀幸, 西川 悟郎, 丸尾 幸憲, 吉原 久美子, 入江 正郎, 皆木 省吾

    接着歯学   35 ( 3 )   66 - 66   2017.10

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 最近のフロアブルコンポジットの歯質接着性と曲げ特性

    入江 正郎, 徳永 英里, 丸尾 幸憲, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   35 ( 3 )   77 - 77   2017.10

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 歯根象牙質と直接法レジンコアー材料との接着性耐久性

    西川 悟郎, 入江 正郎, 丸尾 幸憲, 徳永 英里, 吉原 久美子, 長岡 紀幸, 松本 卓也, 皆木 省吾

    接着歯学   35 ( 3 )   79 - 79   2017.10

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 歯周炎患者にみられる咬筋筋活動の特性に関する研究

    加藤聖也, 川上滋央, MUDE Acing Habibie, MUDE Acing Habibie, 皆木省吾

    日本顎口腔機能学会雑誌   24 ( 1 )   36‐37 - 37   2017.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    DOI: 10.7144/sgf.24.36

    CiNii Article

    J-GLOBAL

    researchmap

  • 精神的ストレスが歯根膜感覚,頬部皮膚触覚に及ぼす影響に関する検討

    宋本儒享, 沖和広, 加藤聖也, 皆木省吾

    日本顎口腔機能学会雑誌   24 ( 1 )   44‐45 - 45   2017.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    DOI: 10.7144/sgf.24.44

    J-GLOBAL

    researchmap

  • DNNに基づく差分スペクトル補正を用いた声質変換による舌亜全摘出者の音韻明瞭性改善の検討

    村上博紀, 原直, 阿部匡伸, 佐藤匡晃, 皆木省吾

    日本音響学会研究発表会講演論文集(CD-ROM)   2017   ROMBUNNO.2‐Q‐25   2017.9

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 充填用グラスアイオノマーセメントのI級窩洞適合性と歯質接着強さ 歯質処理材の効果

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 吉原 久美子, 長岡 紀幸, 松本 卓也

    日本歯科理工学会誌   36 ( 5 )   383 - 383   2017.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 嚥下時の食塊粒度に及ぼす食品周囲のトロミ変化の影響

    山口 恵梨香, 鳥巣 哲朗, 田中 美保子, 多田 浩晃, 黒木 唯文, 杉本 恭子, 皆木 省吾, 村田 比呂司

    老年歯科医学   32 ( 2 )   135 - 136   2017.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 舌後方部の筋機能レベルは食品性状と咀嚼方法によって影響を受ける

    萬田陽介, 兒玉直紀, 前田直人, 皆木省吾

    日本老年歯科医学会学術大会プログラム・抄録集   28th ( 2 )   113 - 115   2017.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    J-GLOBAL

    researchmap

  • 顎顔面補綴のノウハウを一般歯科治療に活かす 「夢の会話プロジェクト」と医歯工連携

    皆木 省吾, 阿部 匡伸, 五福 明夫, 柴田 光宣

    日本補綴歯科学会誌   9 ( 3 )   186 - 190   2017.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    構音障害に対する取り組みの入口として、舌がんに対する舌摘出術後の人工舌治療を行っている。この治療が、補綴科をはじめ口腔外科、耳鼻科、形成外科、リハビリテーション科等との連携で成立していることは言うまでもない。近年のインターネットの高速化、クラウド化、処理速度の向上などによる画像処理、音声処理の概念の進歩は著しく、構音障害の治療はごく近い将来大きな進歩の潮流を形成することは間違いない。この発展は、舌がんのみでなく脳血管障害や種々の神経疾患も対象に含む新たな学問領域と治療体系の創出に直結すると考えられる。歯科補綴学はこの重要な機能領域の創出に積極的に関与することが期待される。(著者抄録)

    researchmap

  • 嚥下時の食塊粒度に及ぼす食品周囲のトロミ変化の影響

    山口 恵梨香, 鳥巣 哲朗, 田中 美保子, 多田 浩晃, 黒木 唯文, 杉本 恭子, 皆木 省吾, 村田 比呂司

    日本老年歯科医学会総会・学術大会プログラム・抄録集   28回   131 - 131   2017.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 舌後方部の筋機能レベルは食品性状と咀嚼方法によって影響を受ける

    萬田 陽介, 兒玉 直紀, 前田 直人, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   28回   113 - 113   2017.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • A new occlusal surface design for artificial posterior teeth to achieve high masticatory performance

    Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Kazuhiro Oki, Shogo Minagi

    JOURNAL OF PROSTHODONTIC RESEARCH   61 ( 2 )   193 - 201   2017.4

     More details

    Language:English   Publisher:ELSEVIER IRELAND LTD  

    Purpose: The low masticatory efficiency of denture prostheses impairs the ability of wearers to consume high-fiber foods. Hence, artificial teeth with high masticatory efficiency are required. This study aimed to establish an occlusal surface design for posterior artificial teeth in denture prostheses that is compatible with the existing artificial teeth arrangement and that has high masticatory efficiency for the comminution of raw vegetables.
    Methods: A masticatory simulator for occluding complete dentures was used to evaluate the masticatory efficiency of four occlusal surface designs, i.e., with parallel grooves occluding at right angles to the opposing teeth, groove depths of 1 and 0.5 mm, and inter-groove distances of 1, 2, and 3 mm. Raw carrots, rice, raw lettuce, chicken breasts, and peanuts were used as test foods to evaluate food comminution.
    Results: Grooved occlusal surface designs with a 1-mm groove depth and a 2- or 3-mm inter groove distance demonstrated significantly greater masticatory efficiency than the conventional occlusal form (p &lt; 0.05).
    Conclusions: The superiority of grooved designs over the conventional design was particularly evident for lettuce and raw carrots in this study, both of which are considered difficult foods to chew with complete dentures. (C) 2016 Japan Prosthodontic Society. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.jpor.2016.05.004

    Web of Science

    Scopus

    PubMed

    researchmap

  • 顎関節症患者の機能評価のガイドライン(2016改訂版)

    皆木 省吾, 山崎 要一, 矢谷 博文, 志賀 博, 山口 泰彦, 服部 佳功, 吉田 教明, 石垣 尚一, 加藤 均, 三浦 宏之, 荒川 一郎, 岡本 和彦, 小野 高裕, 横山 正起, 岡田 和樹, 小川 徹, 菅沼 岳史, 藤澤 政紀, 沖 和広, 坂口 究, 重本 修伺, 瑞森 崇弘, 小見山 道, 田中 恭恵, 堀 一浩, 渡邉 明, 宮脇 正一, 山田 一尋, 斉藤 一誠, 長谷川 信乃, 早崎 治明, 井上 富雄, 井上 誠, 大川 周治, 川良 美佐雄, 祇園白 信仁, 小林 博, 古谷野 潔, 佐々木 啓一, 田中 昌博, 田村 康夫, 野村 修一, 藤村 哲也, 増田 裕次, 鱒見 進一, 倉持 淳子, 昆 はるか, 櫻井 直樹, 山本 早織, 日本顎口腔機能学会, 日本顎口腔機能学会ガイドライン統括委員会

    日本顎口腔機能学会雑誌   23 ( 2 )   E37 - E109   2017.3

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • 充填用グラスアイオノマーセメントの歯質接着強さと曲げ特性 コーティング材の効果

    入江 正郎, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 吉原 久美子, 長岡 紀幸, 松本 卓也

    日本歯科理工学会誌   36 ( 2 )   90 - 90   2017.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 有床義歯装着者の機能評価のガイドライン(2016改訂版)

    皆木 省吾, 山崎 要一, 矢谷 博文, 志賀 博, 山口 泰彦, 服部 佳功, 吉田 教明, 石垣 尚一, 加藤 均, 三浦 宏之, 荒川 一郎, 岡本 和彦, 小野 高裕, 横山 正起, 岡田 和樹, 小川 徹, 菅沼 岳史, 藤澤 政紀, 沖 和広, 坂口 究, 重本 修伺, 瑞森 崇弘, 小見山 道, 田中 恭恵, 堀 一浩, 渡邉 明, 宮脇 正一, 山田 一尋, 斉藤 一誠, 長谷川 信乃, 早崎 治明, 井上 富雄, 井上 誠, 大川 周治, 川良 美佐雄, 祇園白 信仁, 小林 博, 古谷野 潔, 佐々木 啓一, 田中 昌博, 田村 康夫, 野村 修一, 藤村 哲也, 増田 裕次, 鱒見 進一, 倉持 淳子, 昆 はるか, 櫻井 直樹, 山本 早織, 日本顎口腔機能学会, 日本顎口腔機能学会ガイドライン統括委員会

    日本顎口腔機能学会雑誌   23 ( 2 )   E3 - E35   2017.3

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • Does 8-methacryloxyoctyl trimethoxy silane(8-MOTS) improve initial bond strength on lithium disilicate glass ceramic? International journal

    Yukinori Maruo, Goro Nishigawa, Kumiko Yoshihara, Shogo Minagi, Takuya Matsumoto, Masao Irie

    DENTAL MATERIALS   33 ( 3 )   E95 - E100   2017.3

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objectives. Dental ceramic surfaces are modified with silane coupling agents, such as gamma-ymethacryloxypropyl trimethoxy silane (gamma-MPTS), to improve bond strength. For bonding between lithium disilicate glass ceramic and resin cement, the objective was to investigate if 8-methacryloxyoctyl trimethoxy silane (8 -MOTS) could yield a similar performance as the widely used gamma-MPTS.
    Methods. One hundred and ten lithium disilicate glass ceramic specimens were randomly divided into 11 groups (n = 10) according to pretreatment regime. All specimens were pre-treated with a different solution composed of one or a combination of these agents: 10 or 20 wt% silane coupling agent of gamma-MPTS or 8 -MOTS, followed by a hydrolysis solution of acetic acid or 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP). Each pretreated surface was luted to a stainless steel rod of 3.6 mm diameter and 2.0 mm height with resin cement. Shear bond strength between ceramic and cement was measured after 24-h storage in 37 degrees C distilled water.
    Results. 8 -MOTS produced the same bonding performance as gamma-MPTS. Both silane coupling agents significantly increased the bond strength of resin cement, depending on their concentration. When activated by 10-MDP hydrolysis solution, 20 wt% concentration produced the highest values (gamma-MPTS: 24.9 +/- 5.1 MPa; 8 -MOTS: 24.6 +/- 7.4 MPa). Hydrolysis with acetic acid produced lower bond strengths than with 10-MDP.
    Significance. Silane coupling pretreatment with 8 -MOTS increased the initial bond strength between lithium disilicate glass ceramic and resin cement, rendering the same bonding effect as the conventional gamma-MPTS. (C) 2016 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2016.11.004

    Web of Science

    Scopus

    PubMed

    researchmap

  • Does acid etching morphologically and chemically affect lithium disilicate glass ceramic surfaces? International journal

    Yukinori Maruo, Goro Nishigawa, Masao Irie, Kumiko Yoshihara, Takuya Matsumoto, Shogo Minagi

    JOURNAL OF APPLIED BIOMATERIALS & FUNCTIONAL MATERIALS   15 ( 1 )   E93 - E100   2017.1

     More details

    Language:English   Publisher:WICHTIG PUBLISHING  

    Background: This study evaluated the surface morphology, chemical composition and adhesiveness of lithium disilicate glass ceramic after acid etching with hydrofluoric acid or phosphoric acid.
    Methods: Lithium disilicate glass ceramic specimens polished by 600-grit silicon carbide paper were subjected to one or a combination of these surface treatments: airborne particle abrasion with 50-mu m alumina (AA), etching with 5% hydrofluoric acid (HF) or 36% phosphoric acid (Phos), and application of silane coupling agent (Si). Stainless steel rods of 3.6-mm diameter and 2.0-mm height were cemented onto treated ceramic surfaces with a self-adhesive resin cement (Clearfil SA Cement). Shear bond strengths between ceramic and cement were measured after 24-hour storage in 37 degrees C distilled water.
    Results: SEM images of AA revealed the formation of conventional microretentive grooves, but acid etching with HF or Phos produced a porous surface. Bond strengths of AA+HF+Si (28.1 +/- 6.0 MPa), AA+Phos+Si (17.5 +/- 4.1 MPa) and HF+Si (21.0 +/- 3.0 MPa) were significantly greater than those of non-pretreated controls with Si (9.7 +/- 3.7 MPa) and without Si (4.1 +/- 2.4 MPa) (p&lt;0.05). In addition, HF etching alone (26.2 +/- 7.5 MPa) had significantly higher bond strength than AA alone (11.5 +/- 4.0 MPa) (p&lt;0.05). AA+HF, AA+Phos and HF showed cohesive failures.
    Conclusions: Etching with HF or Phos yielded higher bond strength between lithium disilicate glass ceramic and self-adhesive resin cement without microcrack formation.

    DOI: 10.5301/jabfm.5000303

    Web of Science

    Scopus

    PubMed

    researchmap

  • Dream of speaking project and medical-dental-engineering collaboration

    Minagi Shogo, Abe Masanobu, Gofuku Akio, Shibata Mitsunobu

    Annals of Japan Prosthodontic Society   9 ( 3 )   186 - 190   2017

     More details

    Language:Japanese   Publisher:Japan Prosthodontic Society  

    &lt;p&gt; 構音障害に対する取り組みの入口として,舌がんに対する舌摘出術後の人⼯舌治療を行っている.この治療が,補綴科をはじめ口腔外科,耳鼻科,形成外科,リハビリテーション科等との連携で成立していることは言うまでもない.近年のインターネットの高速化,クラウド化,処理速度の向上などによる画像処理,音声処理の概念の進歩は著しく,構音障害の治療はごく近い将来大きな進歩の潮流を形成することは間違いない.この発展は,舌がんのみでなく脳血管障害や種々の神経疾患も対象に含む新たな学問領域と治療体系の創出に直結すると考えられる.歯科補綴学はこの重要な機能領域の創出に積極的に関与することが期待される.&lt;/p&gt;

    CiNii Article

    researchmap

  • Dream of speaking project and medical-dental-engineering collaboration

    皆木省吾, 阿部匡伸, 五福明夫, 柴田光宣

    日本補綴歯科学会誌(Web)   9 ( 3 )   186‐190(J‐STAGE)   2017

     More details

  • 歯周炎患者にみられる咬筋筋活動の特性に関する研究

    加藤聖也, 川上滋央, MUDE Acing Habibie, MUDE Acing Habibie, 皆木省吾

    日本顎口腔機能学会学術大会プログラム・事前抄録集   58th   28‐29   2017

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 夢の会話プロジェクト―舌切除患者への人工舌形態の確立―

    皆木省吾, 皆木省吾, 川上滋央, 川上滋央, 佐藤匡晃, 佐藤匡晃, 兒玉直紀, 兒玉直紀

    顎顔面補綴   39 ( 2 )   36‐41 - 41   2016.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    J-GLOBAL

    researchmap

  • 舌切除患者を対象としたソフトPAPの製作方法

    太田圭二, 太田圭二, 宮崎文伸, 宮崎文伸, 川上滋央, 川上滋央, 佐藤匡晃, 佐藤匡晃, 古西隆之, 古西隆之, 村田尚道, 村田尚道, 兒玉直紀, 兒玉直紀, 皆木省吾, 皆木省吾

    顎顔面補綴   39 ( 2 )   80‐85 - 85   2016.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    PAP(舌接触補助床)は、嚥下障害ならびに構音障害の改善を目的に使用され、その効果が報告されている。一方、広範な舌切除を受けた頭頸部癌症例においては、PAPだけでは充分な効果が発揮されない場合があり、先行研究でKozakiらは、人工舌を製作するとともに上顎に平坦な舌接触面を付与したPAPを装着することで構音の改善が得られると報告している。このPAPは、弾力性のある材質で製作することによって、より良好な結果が得られる。そこで今回、弾力性のある材質を用いて上顎に平坦な舌接触面を付与したPAP(以下Soft PAP)の製作方法を以下の3種に分けて紹介した。1)基本型Soft PAP。2)歯列の保定を兼ねた二重構造型Soft PAP。3)後方開放型Soft PAP。

    J-GLOBAL

    researchmap

  • 最近の合着用セメント 象牙質とCAD/CAM用レジンブロックに対する接着強さ

    入江 正郎, 飯田 祥与, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 長岡 紀幸, 吉原 久美子, 松本 卓也

    接着歯学   34 ( 4 )   141 - 149   2016.12

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    6種の接着システム[3種の処理材併用のレジンセメント;RelyX Ultimate(3M)、Resicem(Shofu)、ESTECEM(Tokuyama Dental)、2種の処理材を併用しないレジンセメント;G-Cem Cerasmart(GC)、SA Luting Plus(Kuraray Noritake Dental)、および1種のレジン配合型グラスアイオノマーセメント;Resiglass(Shofu)]を使用して硬化直後と1日後の象牙質に対する接着強さを検討、次に6種のCAD/CAM冠用レジンブロック[Lava Ultimate(3M)、Cerasmart(GC)、Shofu HC Block(Shofu)、ESTELITE BLOCK(Tokuyama Dental)、KZR-CAD HR(Yamakin)、KATANA Avencia (Kuraray Noritake Dental)]に対して1日後の被着面のサンドブラスト処理有無の影響も接着強さから検討した。その結果、象牙質に対する接着強さは、いずれのセメントも1日後の方が、硬化直後と比較して有意に高い値を示した(t-Test、p&lt;0.05)。1日後のCAD/CAM冠用レジンブロックに対する接着強さは、4種の接着システム(Lava UltimateにScotchbond Universal Adhesive/RelyX Ultimateで接着させた場合、CerasmartにCeramic Primer II/G-Cem Cerasmartで接着させた場合、ESTELITE BLOCKにUNIVERSAL PRIMER/ESTECEMで接着させた場合、KZR-CAD HRにScotchbond Universal Adhesive/RelyX Ultimateで接着させた場合)にサンドブラスト処理することで有意に高い値を示した(t-Test、p&lt;0.05)。しかし、それ以外の3種の接着システム(Shofu HC BlockにPorcelain Primer/Resicemで接着させた場合、Shofu HC BlockにResiglassで接着させた場合、KATANA AvenciaにClearfil Ceramic Primer/SA Luting Plusで接着させた場合)はサンドブラスト処理しても有意に高い値を示さなかった(t-Test、p&gt;0.05)。(著者抄録)

    researchmap

  • 補綴の底力 第2回 フレイル,サルコペニアを予防,改善する超高齢者の咀嚼と義歯治療―高咀嚼能率で噛める総義歯―

    皆木省吾, 萬田陽介, 橋本有希, 田中祐貴, 前田直人

    隔月刊補綴臨床   49 ( 6 )   680‐690 - 690   2016.11

     More details

    Language:Japanese   Publisher:医歯薬出版(株)  

    J-GLOBAL

    researchmap

  • Validation of the optimal site in the neck region for detecting swallowing sounds

    Q. Pan, N. Maeda, Y. Manda, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   43 ( 11 )   840 - 846   2016.11

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Recently, the swallowing sound has been used to detect swallowing events non-invasively. A previous study, using an accelerometer, showed that the site over the lateral border of the trachea immediately inferior to the cricoid cartilage was the optimal site for detecting swallowing sounds. However, the optimal site for detection of the swallowing sound using a microphone remains undetermined. To validate the optimal site in the neck region for detecting swallowing sounds. Fourteen healthy subjects (mean age, 27&lt;bold&gt;&lt;/bold&gt;6 +/- 2&lt;bold&gt;&lt;/bold&gt;2 years; seven male and seven female) participated in this study. Twenty condenser microphones were attached to 20 sites on the left neck surface to detect swallowing sounds. Participants were instructed to swallow five different stimuli three times as follows: Resting saliva, 1 and 5 mL of Japanese tea, and 1 and 5 mL of yoghurt. Mean relative peak intensity was used to indicate the magnitude of the swallowing sound. Sound spectrograms were used to illustrate differences in the properties of swallowing sounds. Mean relative peak intensity number was highest in sites at the inferior border of the mandible just above the sternocleidomastoid muscle (site 11) and sites over the lateral border of the trachea immediately inferior to the cricoid cartilage (site 8). Comparison of spectrograms showed a greater density distribution of higher frequency components at site 11 compared with site 8. These results indicate that the inferior border of the mandible just above the sternocleidomastoid muscle is the optimal site for the detection of swallowing sounds.

    DOI: 10.1111/joor.12440

    Web of Science

    researchmap

  • プライマーの併用が可能な新規セルフアドヒーシブ・レジンセメントの歯質接着性と曲げ特性

    西川 悟郎, 飯田 祥与, 丸尾 幸憲, 入江 正郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   34 ( 3 )   113 - 113   2016.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 新規動揺歯固定材の歯質接着性と曲げ特性

    入江 正郎, 飯田 祥与, 丸尾 幸憲, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   34 ( 3 )   117 - 117   2016.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • Validation of the optimal site in the neck region for detecting swallowing sounds

    Q. Pan, N. Maeda, Y. Manda, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   43 ( 11 )   840 - 846   2016.11

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Recently, the swallowing sound has been used to detect swallowing events non-invasively. A previous study, using an accelerometer, showed that the site over the lateral border of the trachea immediately inferior to the cricoid cartilage was the optimal site for detecting swallowing sounds. However, the optimal site for detection of the swallowing sound using a microphone remains undetermined. To validate the optimal site in the neck region for detecting swallowing sounds. Fourteen healthy subjects (mean age, 27&lt;bold&gt;&lt;/bold&gt;6 +/- 2&lt;bold&gt;&lt;/bold&gt;2 years; seven male and seven female) participated in this study. Twenty condenser microphones were attached to 20 sites on the left neck surface to detect swallowing sounds. Participants were instructed to swallow five different stimuli three times as follows: Resting saliva, 1 and 5 mL of Japanese tea, and 1 and 5 mL of yoghurt. Mean relative peak intensity was used to indicate the magnitude of the swallowing sound. Sound spectrograms were used to illustrate differences in the properties of swallowing sounds. Mean relative peak intensity number was highest in sites at the inferior border of the mandible just above the sternocleidomastoid muscle (site 11) and sites over the lateral border of the trachea immediately inferior to the cricoid cartilage (site 8). Comparison of spectrograms showed a greater density distribution of higher frequency components at site 11 compared with site 8. These results indicate that the inferior border of the mandible just above the sternocleidomastoid muscle is the optimal site for the detection of swallowing sounds.

    DOI: 10.1111/joor.12440

    Web of Science

    researchmap

  • 介護老人保健施設における"口から食べる楽しみの支援"への取り組み

    坂本 隼一, 原 哲也, 兒玉 直紀, 美甘 真, 皆木 省吾

    老年歯科医学   31 ( 2 )   263 - 264   2016.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 食品周囲のトロミの変化が嚥下時の食塊状態に及ぼす影響

    山口 恵梨香, 鳥巣 哲朗, 田中 美保子, 多田 浩晃, 黒木 唯文, 片山 昇, 杉本 恭子, 皆木 省吾, 村田 比呂司

    老年歯科医学   31 ( 2 )   297 - 297   2016.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • GMMに基づく声質変換を用いた舌亜全摘出者の音韻明瞭性改善の検討

    田中慧, 原直, 阿部匡伸, 皆木省吾

    日本音響学会研究発表会講演論文集(CD-ROM)   2016   ROMBUNNO.2‐5‐8   2016.8

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 舌全摘・亜全摘患者に会話を取り戻す人工舌治療―医歯工連携「夢の会話プロジェクト」―

    皆木省吾, 小崎健一, 川上滋央, 古西隆之, 太田圭二, 小野田友男, 松本洋, 水川展吉, 五福明夫, 阿部匡伸

    日本歯科医師会雑誌   69 ( 5 )   464 - 464   2016.8

     More details

    Language:Japanese   Publisher:(公社)日本歯科医師会  

    J-GLOBAL

    researchmap

  • 平成27年度にODAPUSプログラムで岡山大学に留学をした5か国6校の学生の意識調査

    藤田 麻里子, 柳 文修, 久富 美紀, 此内 浩信, 村上 純, 前田 あずさ, 窪木 拓男, 宮脇 卓也, 仲野 道代, 皆木 省吾, 浅海 淳一

    日本歯科医学教育学会総会・学術大会プログラム・抄録集   35回   97 - 97   2016.7

     More details

    Language:Japanese   Publisher:日本歯科医学教育学会  

    researchmap

  • 「夢の会話プロジェクト」と医歯工連携

    皆木省吾

    日本補綴歯科学会誌(Web)   8   80 (WEB ONLY)   2016.7

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 食塊粒子の画像解析による咀嚼能力評価

    木原 琢也, 濱本 有美, 田地 豪, 藤川 佳也, 矢口 悟, 河原 和子, 三村 純代, 首藤 崇裕, 皆木 省吾, 二川 浩樹

    日本補綴歯科学会誌   8 ( 特別号 )   322 - 322   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 各種客観的咀嚼能率検査法に関する検討 グルコセンサーと食塊粒度計測法の比較

    田中 美保子, 鳥巣 哲朗, 多田 浩晃, 山口 恵梨香, 浪越 建男, 杉本 恭子, 皆木 省吾, 村田 比呂司

    日本補綴歯科学会誌   8 ( 特別号 )   324 - 324   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • コラーゲンスポンジをポリアジピン酸ジビニルで補強した多孔型吸収性骨補填材の有用性

    清瀧 優也, 原 哲也, 田仲 持郎, 長岡 紀幸, 山田 知枝, 伊志嶺 知沙, 坂本 隼一, 荒木 大介, 飯田 祥与, 宮崎 貴子, 皆木 省吾

    日本補綴歯科学会誌   8 ( 特別号 )   300 - 300   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 咀嚼能力の総合的な解析に向けた生体信号と食塊粒度の同期記録法の検討

    福永 温句, 重本 修伺, 大本 勝弘, 田島 登誉子, 宮本 裕司, 皆木 省吾, 松香 芳三

    日本補綴歯科学会誌   8 ( 特別号 )   314 - 314   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 無歯顎堤における片側性咬合平衡の得られる領域の分布と対向関係に関する分析

    岡本 信, 前田 直人, 山本 美恵, 守屋 佳典, 鵜川 由紀子, 崎谷 公子, 森 慎吾, 洲脇 道弘, 中島 啓一朗, 角谷 真一, 沖 和広, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   8 ( 特別号 )   217 - 217   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 岡山大学病院歯科医師卒後臨床研修における補綴治療経験の有無が治療難易度に及ぼす影響

    兒玉 直紀, 杉本 恭子, 西川 悟郎, 原 哲也, 皆木 省吾

    日本歯科医学教育学会総会・学術大会プログラム・抄録集   35回   153 - 153   2016.7

     More details

    Language:Japanese   Publisher:日本歯科医学教育学会  

    researchmap

  • 顎顔面補綴のノウハウを一般歯科治療に生かす 「夢の会話プロジェクト」と医歯工連携

    皆木 省吾

    日本補綴歯科学会誌   8 ( 特別号 )   80 - 80   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 各種客観的咀嚼能率検査法に関する検討―グルコセンサーと食塊粒度計測法の比較―

    田中美保子, 鳥巣哲朗, 多田浩晃, 山口恵梨香, 浪越建男, 杉本恭子, 皆木省吾, 村田比呂司

    日本補綴歯科学会誌(Web)   8 ( 特別号 )   324 (WEB ONLY) - 324   2016.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    J-GLOBAL

    researchmap

  • 食塊の画像解析による咀嚼能率評価

    濱本 有美, 木原 琢也, 田地 豪, 藤川 佳也, 矢口 悟, 河原 和子, 三村 純代, 首藤 崇裕, 皆木 省吾, 二川 浩樹

    広島大学歯学雑誌   48 ( 1 )   93 - 93   2016.6

     More details

    Language:Japanese   Publisher:広島大学歯学会  

    researchmap

  • 食品周囲のトロミの変化が嚥下時の食塊状態に及ぼす影響

    山口 恵梨香, 鳥巣 哲朗, 田中 美保子, 多田 浩晃, 黒木 唯文, 片山 昇, 杉本 恭子, 皆木 省吾, 村田 比呂司

    日本老年歯科医学会総会・学術大会プログラム・抄録集   27回   233 - 233   2016.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • New method of neck surface electromyography for the evaluation of tongue-lifting activity

    Y. Manda, N. Maeda, Q. Pan, K. Sugimoto, Y. Hashimoto, Y. Tanaka, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   43 ( 6 )   417 - 425   2016.6

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Elevation of the posterior part of the tongue is important for normal deglutition and speech. The purpose of this study was to develop a new surface electromyography (EMG) method to non-invasively and objectively evaluate activity in the muscles that control lifting movement in the posterior tongue. Neck surface EMG (N-EMG) was recorded using differential surface electrodes placed on the neck, 1 cm posterior to the posterior border of the mylohyoid muscle on a line orthogonal to the lower border of the mandible. Experiment 1: Three healthy volunteers (three men, mean age 37.7 years) participated in an evaluation of detection method of the posterior tongue lifting up movement. EMG recordings from the masseter, temporalis and submental muscles and N-EMG revealed that i) N-EMG was not affected by masseter muscle EMG and ii) N-EMG activity was not observed during simple jaw opening and tongue protrusion, revealing the functional difference between submental surface EMG and N-EMG. Experiment 2: Seven healthy volunteers (six men and one woman, mean age 27.9 years) participated in a quantitative evaluation of muscle activity. Tongue-lifting tasks were performed, exerting a prescribed force of 20, 50, 100 and 150 gf with visual feedback. For all subjects, a significant linear relationship was observed between the tongue-lifting force and N-EMG activity (P &lt; 0.01). These findings indicate that N-EMG can be used to quantify the force of posterior tongue lifting and could be useful to evaluate the effect of tongue rehabilitation in future studies.

    DOI: 10.1111/joor.12389

    Web of Science

    researchmap

  • 介護老人保健施設における"口から食べる楽しみの支援"への取り組み

    坂本 隼一, 原 哲也, 兒玉 直紀, 美甘 真, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   27回   210 - 210   2016.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • New method of neck surface electromyography for the evaluation of tongue-lifting activity

    Y. Manda, N. Maeda, Q. Pan, K. Sugimoto, Y. Hashimoto, Y. Tanaka, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   43 ( 6 )   417 - 425   2016.6

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Elevation of the posterior part of the tongue is important for normal deglutition and speech. The purpose of this study was to develop a new surface electromyography (EMG) method to non-invasively and objectively evaluate activity in the muscles that control lifting movement in the posterior tongue. Neck surface EMG (N-EMG) was recorded using differential surface electrodes placed on the neck, 1 cm posterior to the posterior border of the mylohyoid muscle on a line orthogonal to the lower border of the mandible. Experiment 1: Three healthy volunteers (three men, mean age 37.7 years) participated in an evaluation of detection method of the posterior tongue lifting up movement. EMG recordings from the masseter, temporalis and submental muscles and N-EMG revealed that i) N-EMG was not affected by masseter muscle EMG and ii) N-EMG activity was not observed during simple jaw opening and tongue protrusion, revealing the functional difference between submental surface EMG and N-EMG. Experiment 2: Seven healthy volunteers (six men and one woman, mean age 27.9 years) participated in a quantitative evaluation of muscle activity. Tongue-lifting tasks were performed, exerting a prescribed force of 20, 50, 100 and 150 gf with visual feedback. For all subjects, a significant linear relationship was observed between the tongue-lifting force and N-EMG activity (P &lt; 0.01). These findings indicate that N-EMG can be used to quantify the force of posterior tongue lifting and could be useful to evaluate the effect of tongue rehabilitation in future studies.

    DOI: 10.1111/joor.12389

    Web of Science

    researchmap

  • Structure of a New Palatal Plate and the Artificial Tongue for Articulation Disorder in a Patient with Subtotal Glossectomy

    Ken-ichi Kozaki, Shigehisa Kawakami, Takayuki Konishi, Keiji Ohta, Jitsuro Yano, Tomoo Onoda, Hiroshi Matsumoto, Nobuyoshi Mizukawa, Yoshihiro Kimata, Kazunori Nishizaki, Seiji Iida, Akio Gofuku, Masanobu Abe, Shogo Minagi

    ACTA MEDICA OKAYAMA   70 ( 3 )   205 - 211   2016.6

     More details

    Language:English   Publisher:OKAYAMA UNIV MED SCHOOL  

    A palatal augmentation prosthesis (PAP) is used to facilitate improvement in the speech and swallowing functions of patients with tongue resection or tongue movement disorders. However, a PAP's effect is limited in cases where articulation disorder is severe due to wide glossectomy and/or segmental mandibulectomy. In this paper, we describe speech outcomes of a patient with an articulation disorder following glossectomy and segmental mandibulectomy. We used a palatal plate (PP) based on a PAP, along with an artificial tongue (KAT). Speech improvement was evaluated by a standardized speech intelligibility test consisting of 100 syllables. The speech intelligibility score was significantly higher when the patient wore both the PP and KAT than when he wore neither (p=0.013). The conversational intelligibility score was significantly improved with the PP and KAT than without PP and KAT (p=0.024). These results suggest that speech function can be improved in patients with hard tissue defects with segmental mandibulectomy using both a PP and a KAT. The nature of the design of the PP and that of the KAT will allow these prostheses to address a wide range of tissue defects.

    DOI: 10.18926/AMO/54420

    Web of Science

    researchmap

  • Structure of a New Palatal Plate and the Artificial Tongue for Articulation Disorder in a Patient with Subtotal Glossectomy

    Ken-ichi Kozaki, Shigehisa Kawakami, Takayuki Konishi, Keiji Ohta, Jitsuro Yano, Tomoo Onoda, Hiroshi Matsumoto, Nobuyoshi Mizukawa, Yoshihiro Kimata, Kazunori Nishizaki, Seiji Iida, Akio Gofuku, Masanobu Abe, Shogo Minagi

    ACTA MEDICA OKAYAMA   70 ( 3 )   205 - 211   2016.6

     More details

    Language:English   Publisher:OKAYAMA UNIV MED SCHOOL  

    A palatal augmentation prosthesis (PAP) is used to facilitate improvement in the speech and swallowing functions of patients with tongue resection or tongue movement disorders. However, a PAP's effect is limited in cases where articulation disorder is severe due to wide glossectomy and/or segmental mandibulectomy. In this paper, we describe speech outcomes of a patient with an articulation disorder following glossectomy and segmental mandibulectomy. We used a palatal plate (PP) based on a PAP, along with an artificial tongue (KAT). Speech improvement was evaluated by a standardized speech intelligibility test consisting of 100 syllables. The speech intelligibility score was significantly higher when the patient wore both the PP and KAT than when he wore neither (p=0.013). The conversational intelligibility score was significantly improved with the PP and KAT than without PP and KAT (p=0.024). These results suggest that speech function can be improved in patients with hard tissue defects with segmental mandibulectomy using both a PP and a KAT. The nature of the design of the PP and that of the KAT will allow these prostheses to address a wide range of tissue defects.

    DOI: 10.18926/AMO/54420

    Web of Science

    PubMed

    researchmap

  • 力のコントロール 2 力の生体への負荷・発現の観点から

    川上滋央, 皆木省吾

    歯界展望   137‐143   2016.5

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 【補綴装置および歯の延命のための最新治療指針】 (Part6)力のコントロール 力の生体への負荷・発現の観点から

    川上 滋央, 皆木 省吾

    歯界展望   別冊 ( 補綴装置および歯の延命のための最新治療指針 )   137 - 143   2016.5

     More details

    Language:Japanese   Publisher:医歯薬出版(株)  

    researchmap

  • 高粉液比型グラスアイオノマー I級窩洞適合性と機械的特性

    入江 正郎, 田仲 持郎, 松本 卓也, 武田 宏明, 鳥井 康弘, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 長岡 紀幸, 吉原 久美子

    日本歯科理工学会誌   35 ( 2 )   77 - 77   2016.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • Various Effects of Sandblasting of Dental Restorative Materials

    Goro Nishigawa, Yukinori Maruo, Masao Irie, Naoto Maeda, Kumiko Yoshihara, Noriyuki Nagaoka, Takuya Matsumoto, Shogo Minagi

    PLOS ONE   11 ( 1 )   e0147077-e0147077   2016.1

     More details

    Language:English   Publisher:PUBLIC LIBRARY SCIENCE  

    Background
    Sandblasting particles which remain on the surfaces of dental restorations are removed prior to cementation. It is probable that adhesive strength between luting material and sandblasting particle remnants might exceed that with restorative material. If that being the case, blasting particles adhere to sandblasted material surface could be instrumental to increasing adhesive strength like underlying bonding mechanism between luting material and silanized particles of tribochemical silica coating-treated surface. We hypothesize that ultrasonic cleaning of bonding surfaces, which were pretreated with sandblasting, may affect adhesive strength of a resin luting material to dental restorative materials.
    Methods
    We therefore observed adhesive strength of resin luting material to aluminum oxide was greater than those to zirconia ceramic and cobalt-chromium alloy beforehand. To measure the shear bond strengths of resin luting material to zirconia ceramic and cobalt-chromium alloy, forty specimens of each restorative material were prepared. Bonding surfaces were polished with silicon abrasive paper and then treated with sandblasting. For each restorative material, 40 sandblasted specimens were equally divided into two groups: ultrasonic cleaning (USC) group and non-ultrasonic cleaning (NUSC) group. After resin luting material was polymerized on bonding surface, shear test was performed to evaluate effect of ultrasonic cleaning of bonding surfaces pretreated with sandblasting on bond strength.
    Results
    For both zirconia ceramic and cobalt-chromium alloy, NUSC group showed significantly higher shear bond strength than USC group.
    Conclusions
    Ultrasonic cleaning of dental restorations after sandblasting should be avoided to retain improved bonding between these materials.

    DOI: 10.1371/journal.pone.0147077

    Web of Science

    researchmap

  • Various Effects of Sandblasting of Dental Restorative Materials

    Goro Nishigawa, Yukinori Maruo, Masao Irie, Naoto Maeda, Kumiko Yoshihara, Noriyuki Nagaoka, Takuya Matsumoto, Shogo Minagi

    PLOS ONE   11 ( 1 )   2016.1

     More details

    Language:English   Publisher:PUBLIC LIBRARY SCIENCE  

    Background
    Sandblasting particles which remain on the surfaces of dental restorations are removed prior to cementation. It is probable that adhesive strength between luting material and sandblasting particle remnants might exceed that with restorative material. If that being the case, blasting particles adhere to sandblasted material surface could be instrumental to increasing adhesive strength like underlying bonding mechanism between luting material and silanized particles of tribochemical silica coating-treated surface. We hypothesize that ultrasonic cleaning of bonding surfaces, which were pretreated with sandblasting, may affect adhesive strength of a resin luting material to dental restorative materials.
    Methods
    We therefore observed adhesive strength of resin luting material to aluminum oxide was greater than those to zirconia ceramic and cobalt-chromium alloy beforehand. To measure the shear bond strengths of resin luting material to zirconia ceramic and cobalt-chromium alloy, forty specimens of each restorative material were prepared. Bonding surfaces were polished with silicon abrasive paper and then treated with sandblasting. For each restorative material, 40 sandblasted specimens were equally divided into two groups: ultrasonic cleaning (USC) group and non-ultrasonic cleaning (NUSC) group. After resin luting material was polymerized on bonding surface, shear test was performed to evaluate effect of ultrasonic cleaning of bonding surfaces pretreated with sandblasting on bond strength.
    Results
    For both zirconia ceramic and cobalt-chromium alloy, NUSC group showed significantly higher shear bond strength than USC group.
    Conclusions
    Ultrasonic cleaning of dental restorations after sandblasting should be avoided to retain improved bonding between these materials.

    DOI: 10.1371/journal.pone.0147077

    Web of Science

    researchmap

  • Ipsilateral molar clenching induces less pain and discomfort than contralateral molar clenching in patients with unilateral anterior disc displacement of the temporomandibular joint

    Yohei Kumazaki, Shigehisa Kawakami, Atsutoshi Hirata, Kazuhiro Oki, Shogo Minagi

    Journal of Oral and Facial Pain and Headache   30 ( 3 )   241 - 248   2016

     More details

    Language:English   Publisher:Quintessence Publishing Co. Inc.  

    Aims: To assess the influence of clenching side and location (ie, tooth) on the bite force necessary to induce pain or discomfort in patients with unilateral anterior disc displacement (ADD) of the temporomandibular joint (TMJ). Methods: A total of 17 patients with unilateral ADD diagnosed clinically and with magnetic resonance imaging were included. A bite force meter was positioned at each of four experimental positions: the mandibular first premolars and first molars, bilaterally. Subjects were instructed to clench on the bite force meter until they felt pain or discomfort in the orofacial area and to report the location of the pain. Differences in pain location (ADD side versus contralateral side) and in the bite force thresholds for eliciting pain or discomfort were assessed by means of the paired t test and Wilcoxon signed-rank test. Results: Only 18% of subjects (3 out of 17) reported pain in the TMJ with ADD during clenching at the ipsilateral molar, whereas 65% (11 out of 17) reported joint pain during clenching on the contralateral molar (P = .005). At the molars, the mean ± standard deviation bite force necessary to induce pain was 241.2 ± 135.5 N on the side with ADD and 160.9 ± 78.0 N on the contralateral side. The mean molar bite force necessary to induce pain on the side with ADD was significantly higher than that on the contralateral side (P = .002). Conclusion: Patients with unilateral ADD had fewer reports of TMJ pain and discomfort when they were molar clenching on the ipsilateral side compared to molar clenching on the contralateral side.

    DOI: 10.11607/ofph.1405

    Scopus

    PubMed

    researchmap

  • Investigation on Visibility of Drilled Hole in Laser Micro-drilling of Multi-layered Artificial Skin.

    Okamoto Y, Asako K, Maeda N, Okada A, Minagi S, Pan Q, Jin K, Nishigawa G

    Int J Electr Machin   21   13 - 17   2016

     More details

  • Ipsilateral molar clenching induces less pain and discomfort than contralateral molar clenching in patients with unilateral anterior disc displacement of the temporomandibular joint

    Yohei Kumazaki, Shigehisa Kawakami, Atsutoshi Hirata, Kazuhiro Oki, Shogo Minagi

    Journal of Oral and Facial Pain and Headache   30 ( 3 )   241 - 248   2016

     More details

    Language:English   Publisher:Quintessence Publishing Co. Inc.  

    Aims: To assess the influence of clenching side and location (ie, tooth) on the bite force necessary to induce pain or discomfort in patients with unilateral anterior disc displacement (ADD) of the temporomandibular joint (TMJ). Methods: A total of 17 patients with unilateral ADD diagnosed clinically and with magnetic resonance imaging were included. A bite force meter was positioned at each of four experimental positions: the mandibular first premolars and first molars, bilaterally. Subjects were instructed to clench on the bite force meter until they felt pain or discomfort in the orofacial area and to report the location of the pain. Differences in pain location (ADD side versus contralateral side) and in the bite force thresholds for eliciting pain or discomfort were assessed by means of the paired t test and Wilcoxon signed-rank test. Results: Only 18% of subjects (3 out of 17) reported pain in the TMJ with ADD during clenching at the ipsilateral molar, whereas 65% (11 out of 17) reported joint pain during clenching on the contralateral molar (P = .005). At the molars, the mean ± standard deviation bite force necessary to induce pain was 241.2 ± 135.5 N on the side with ADD and 160.9 ± 78.0 N on the contralateral side. The mean molar bite force necessary to induce pain on the side with ADD was significantly higher than that on the contralateral side (P = .002). Conclusion: Patients with unilateral ADD had fewer reports of TMJ pain and discomfort when they were molar clenching on the ipsilateral side compared to molar clenching on the contralateral side.

    DOI: 10.11607/ofph.1405

    Scopus

    PubMed

    researchmap

  • 最近の合着用セメント:象牙質とCAD/CAM用レジンブロックに対する歯質接着強さ.

    入江正郎, 飯田祥与, 丸尾幸憲, 西川悟郎, 皆木省吾, 長岡紀幸, 吉原久美子, 松本卓也

    接着歯学   34 ( 4 )   141 - 149   2016

     More details

  • Functional monomer impurity affects adhesive performance

    Kumiko Yoshihara, Noriyuki Nagaoka, Takumi Okihara, Manabu Kuroboshi, Satoshi Hayakawa, Yukinori Maruo, Goro Nishigawa, Jan De Munck, Yasuhiro Yoshida, Bart Van Meerbeek

    DENTAL MATERIALS   31 ( 12 )   1493 - 1501   2015.12

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objective. The functional monomer 10-MDP has been considered as one of the best performing functional monomers for dental adhesives. Different adhesives containing 10-MDP are commercially available, among which many so-called 'universal' adhesives. We hypothesize that the quality of the functional monomer 10-MDP in terms of purity may affect bonding performance.
    Methods. We therefore characterized three different 10-MDP versions (10-MDP_KN provided by Kuraray Noritake; 10-MDP_PCM provided by PCM; 10-MDP_DMI provided by DMI) using NMR, and analyzed their ability to form 10-MDP_Ca salts on dentin using XRD. The 'immediate' and 'aged' micro-tensile bond strength (mu TBS) to dentin of three experimental 10-MDP primers was measured. The resultant interfacial adhesive-dentin ultra-structure was characterized using TEM.
    Results. NMR disclosed impurities and the presence of 10-MDP dimer in 10-MDP_PCM and 10-MDP_DMI. 10-MDP_PCM and 10-MDP_DMI appeared also sensitive to hydrolysis. 10-MDP_KN, on the contrary, contained less impurities and dimer, and did not undergo hydrolysis. XRD revealed more intense 10-MDP_Ca salt deposition on dentin induced by 10-MDP_KN. The adhesive based on the experimental 10-MDP_KN primer resulted in a significantly higher 'immediate' bond strength that remained stable upon aging; the mu TBS of the experimental 10-MDP_PCM and 10-MDP_DMI adhesives significantly dropped upon aging. TEM revealed thicker hybridization and more intense nano-layering for 10-MDP_KN.
    Significance. It was concluded that primer impurities and the presence of 10-MDP dimer affected not only hybridization, but also reduced the formation of 10-MDP_Ca salts and nano-layering. 10-MDP in a high purity grade is essential to achieve durable bonding. (C) 2015 Published by Elsevier Ltd on behalf of Academy of Dental Materials. All rights reserved.

    DOI: 10.1016/j.dental.2015.09.019

    Web of Science

    researchmap

  • 「咬める」義歯の考え方

    皆木 省吾

    岡山歯学会雑誌   34 ( 2 )   78 - 78   2015.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 摂食嚥下リハビリテーションに関する研修会の意識調査

    村田 尚道, 前川 享子, 孫田 哲郎, 田尻 絢子, 細坪 充裕, 東 倫子, 神田 ゆう子, 小林 幸生, 野島 靖子, 森 貴幸, 山田 智枝, 宋本 儒享, 徳善 貴大, 皆木 省吾, 江草 正彦

    岡山歯学会雑誌   34 ( 2 )   53 - 57   2015.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    岡山大学歯学部では平成17年度から「摂食・嚥下リハビリテーション従事者研修会」を開催しており、平成19年度以降は、医師、歯科医師、看護師、歯科衛生士、作業療法士、管理栄養士による全9回の講義を実施している。今回、平成17〜26年度の受講者1299名にアンケートを行い、「職種」「受講動機」「受講時の感想(満足度・理解度・難易度・講義時間・講義回数・受講費)」「受講後の感想(臨床現場での有用性)」などについて調査した。393名から回答が得られ、職種の内訳は歯科医師が最も多く、次いで歯科衛生士、看護師の順であった。受講動機は「自己研鑚」が最も多く、次に多いは「臨床で必要」であった。受講時の感想項目のうち、満足度については「高い」「やや高い」と答えた人が96%、理解度については「高い」「やや高い」が85%であった。臨床での有用性は、「有用」「やや有用」が96%であった。

    researchmap

  • レジンセメントのCAD/CAM用レジンブロックに対する接着強さに及ぼすサンドブラスト処理の影響

    入江 正郎, 田仲 持郎, 松本 卓也, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 吉原 久美子

    接着歯学   33 ( 4 )   181 - 186   2015.12

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    接着性レジンセメントシステムRelyX Ultimate/Scotchbond Universal Adhesive(3M)の、5種CAD/CAM冠用レジンブロック(Lava Ultimate:3M、CeraSmart:ジーシー、松風HC Block:松風、KZR-CAD HR:山本貴金属地金、KATANA Avencia:クラレノリタケデンタル)に対する接着強さに及ぼすサンドブラストおよびコジェット・サンドブラスト処理の影響を検討した。その結果、サンドブラストあるいはコジェット・サンドブラスト処理することにより、無処理と比較して全てのブロックにおいて有意に接着強さは向上した。ただし、サンドブラスト処理が有効か、コジェット・サンドブラスト処理が有効かは、それぞれのCAD/CAM冠用レジンブロックによって異なることが示された。(著者抄録)

    researchmap

  • 介護老人保健施設入居高齢者の咀嚼能力に関する調査研究

    田中 祐貴, 橋本 有希, 平田 敦俊, 坂本 隼一, 沖 和広, 皆木 省吾

    岡山歯学会雑誌   34 ( 2 )   77 - 77   2015.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 新規動揺歯固定および矯正用ブラケット接着材のエナメル質に対する接着強さ

    入江 正郎, 田仲 持郎, 松本 卓也, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 吉原 久美子, 長岡 紀幸

    接着歯学   33 ( 3 )   143 - 143   2015.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 最近のレジンセメントの歯質接着性と曲げ特性

    丸尾 幸憲, 入江 正郎, 西川 悟郎, 吉原 久美子, 長岡 紀幸, 皆木 省吾, 松本 卓也

    接着歯学   33 ( 3 )   142 - 142   2015.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 補綴装置および歯の延命のために(Part 6) 力のコントロール 顎口腔系に発現する力の様相とその負荷

    皆木 省吾, 熊崎 洋平, 川上 滋央

    日本補綴歯科学会誌   7 ( 4 )   345 - 350   2015.10

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    咀嚼筋群によって発揮される力は顎口腔系に大きな影響を及ぼす。近年まで、この顎口腔系にかかる力のうち重要なものの一つとして、夜間ブラキシズムが長く注目されてきた。しかし最近の研究によって、咀嚼筋群の活動に関する知見が大きく変容しつつある。携帯型の高精度筋電計を用いて終日筋電図の記録・解析が可能となったことによる生物学的インパクトは大きく、これまでに原因の分からなかった臨床上の現象に対して覚醒時筋活動の視点から説明がつきはじめているものもある。本稿では、これらの方法論および集積されつつある最新の知見を含めて、顎口腔系への力の影響を考察した。(著者抄録)

    researchmap

  • 病院および高齢者施設職員を対象にした摂食嚥下リハビリテーション研修会に関するアンケート調査

    村田 尚道, 前川 享子, 小林 幸生, 角谷 真一, 松永 匡司, 相坂 有一郎, 松尾 慶子, 森 貴幸, 皆木 省吾, 江草 正彦

    老年歯科医学   30 ( 2 )   213 - 214   2015.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 舌後方部挙上運動をオトガイ下部筋活動から分離検出する表面筋電図法の確立

    萬田 陽介, 前田 直人, 潘 秋月, 平田 敦俊, 杉本 恭子, 川上 滋央, 沖 和広, 皆木 省吾

    日本顎口腔機能学会雑誌   22 ( 1 )   30 - 31   2015.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • 充填用グラスアイオノマーセメント I級窩洞適合性と歯質接着強さ

    入江 正郎, 田仲 持郎, 松本 卓也, 武田 宏明, 鳥井 康弘, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 長岡 紀幸, 吉原 久美子

    日本歯科理工学会誌   34 ( 5 )   407 - 407   2015.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • Effect of visual biofeedback of posterior tongue movement on articulation rehabilitation in dysarthria patients

    J. Yano, C. Shirahige, K. Oki, N. Oisaka, I. Kumakura, A. Tsubahara, S. Minagi

    JOURNAL OF ORAL REHABILITATION   42 ( 8 )   571 - 579   2015.8

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Articulation is driven by various combinations of movements of the lip, tongue, soft palate, pharynx and larynx, where the tongue plays an especially important role. In patients with cerebrovascular disorder, lingual motor function is often affected, causing dysarthria. We aimed to evaluate the effect of visual biofeedback of posterior tongue movement on articulation rehabilitation in dysarthria patients with cerebrovascular disorder. Fifteen dysarthria patients (10 men and 5 women; mean age, 707 +/- 103years) agreed to participate in this study. A device for measuring the movement of the posterior part of the tongue was used for the visual biofeedback. Subjects were instructed to produce repetitive articulation of [ka] as fast and steadily as possible between a lungful with/without visual biofeedback. For both the unaffected and affected sides, the range of ascending and descending movement of the posterior tongue with visual biofeedback was significantly larger than that without visual biofeedback. The coefficient of variation for these movements with visual biofeedback was significantly smaller than that without visual biofeedback. With visual biofeedback, the range of ascent exhibited a significant and strong correlation with that of descent for both the unaffected and affected sides. The results of this study revealed that the use of visual biofeedback leads to prompt and preferable change in the movement of the posterior part of the tongue. From the standpoint of pursuing necessary rehabilitation for patients with attention and memory disorders, visualization of tongue movement would be of marked clinical benefit.

    DOI: 10.1111/joor.12293

    Web of Science

    researchmap

  • 口唇圧による前歯舌側移動により発症・再燃した顎関節症の一症例

    加藤 聖也, 川上 滋央, ムデ・アチンハビビ, 潘 秋月, 熊崎 洋平, 兒玉 直紀, 沖 和広, 皆木 省吾

    日本顎関節学会雑誌   27 ( Suppl. )   180 - 180   2015.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • 難症例義歯治療の有効ポイントと近年の動向

    皆木省吾

    九州歯科学会雑誌   69 ( 2 )   29‐33 - 33   2015.6

     More details

    Language:Japanese   Publisher:九州歯科学会  

    認知症、多発性脳梗塞など多様な背景を有する現在の日本の義歯治療には、それに見合った論理概念と具体的対応手法が必要と考えられる。患者の体位保持能力などを勘案すれば、処置に必要とされる具体的なスキルを体得した術者が短時間で正確に処置を行うことが期待される。具体的手法として、上顎総義歯の易脱離に対する抵抗形態の付与、下顎義歯の浮き上がりを改善する床形態の修正を紹介し、義歯治療法の習得に関わる状況について考察した。

    CiNii Article

    J-GLOBAL

    researchmap

  • 病院および高齢者施設職員を対象とした摂食嚥下リハビリテーション研修会に関するアンケート調査

    村田 尚道, 前川 享子, 小林 幸生, 角谷 真一, 松永 匡司, 相坂 有一郎, 松尾 慶子, 森 貴幸, 皆木 省吾, 江草 正彦

    日本老年歯科医学会総会・学術大会プログラム・抄録集   26回   197 - 197   2015.5

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 終日記録咬筋筋電図と歯根膜感覚閾値を利用した顎関節症罹患状態についての検討

    平田敦俊, 加藤聖也, 松永匡司, 熊崎洋平, 荒木大介, 美甘真, 橋本有希, 萬田陽介, 田中祐貴, 清瀧優也, 原哲也, 沖和広, 皆木省吾

    日本補綴歯科学会誌(Web)   7 ( 特別号 )   1‐6‐89 (WEB ONLY) - 279   2015.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    J-GLOBAL

    researchmap

  • CAD/CAM人工歯を使用した全部床義歯 オクルーザルマップCAD/CAM化の試み

    岡本 信, 前田 直人, 山本 美恵, 守屋 佳典, 鵜川 由紀子, 洲脇 道弘, 角谷 真一, 中島 啓一朗, 森 慎吾, 崎谷 公子, 沖 和広, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   7 ( 特別号 )   294 - 294   2015.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 1液性ボンディング材中に含まれるシランカップリング材のカップリング効果の検討

    吉原 久美子, 長岡 紀幸, 入江 正郎, 西川 悟郎, 丸尾 幸憲, 松本 卓也, 皆木 省吾, 吉田 靖弘

    日本補綴歯科学会誌   7 ( 特別号 )   169 - 169   2015.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • CAD/CAMレジンブロックとレジンセメントの歯質接着性に関する研究

    飯田 祥与, 入江 正郎, 西川 悟郎, 丸尾 幸憲, 吉原 久美子, 前田 直人, 荒木 大介, 萬田 陽介, 松本 卓也, 皆木 省吾

    日本補綴歯科学会誌   7 ( 特別号 )   263 - 263   2015.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • A novel automated detection system for swallowing sounds during eating and speech under everyday conditions

    C. Fukuike, N. Kodama, Y. Manda, Y. Hashimoto, K. Sugimoto, A. Hirata, Q. Pan, N. Maeda, S. Minagi

    JOURNAL OF ORAL REHABILITATION   42 ( 5 )   340 - 347   2015.5

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    The wave analysis of swallowing sounds has been receiving attention because the recording process is easy and non-invasive. However, up until now, an expert has been needed to visually examine the entire recorded wave to distinguish swallowing from other sounds. The purpose of this study was to establish a methodology to automatically distinguish the sound of swallowing from sound data recorded during a meal in the presence of everyday ambient sound. Seven healthy participants (mean age: 267 +/- 13years) participated in this study. A laryngeal microphone and a condenser microphone attached to the nostril were used for simultaneous recording. Recoding took place while participants were taking a meal and talking with a conversational partner. Participants were instructed to step on a foot pedal trigger switch when they swallowed, representing self-enumeration of swallowing, and also to achieve six additional noise-making tasks during the meal in a randomised manner. The automated analysis system correctly detected 342 out of the 352 self-enumerated swallowing events (sensitivity: 972%) and 479 out of the 503 semblable wave periods of swallowing (specificity: 952%). In this study, the automated detection system for swallowing sounds using a nostril microphone was able to detect the swallowing event with high sensitivity and specificity even under the conditions of daily life, thus showing potential utility in the diagnosis or screening of dysphagic patients in future studies.

    DOI: 10.1111/joor.12264

    Web of Science

    researchmap

  • 1液性ボンディング材中に含まれるシランカップリング材のカップリング効果の検討

    吉原久美子, 長岡紀幸, 入江正郎, 西川悟郎, 丸尾幸憲, 松本卓也, 皆木省吾, 吉田靖弘

    日本補綴歯科学会誌(Web)   7   2‐3‐2 (WEB ONLY)   2015.5

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 有床義歯難症例に対する治療のポイント

    皆木省吾

    九州歯科学会雑誌   69   6   2015.4

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 有床義歯難症例への対応 有床義歯難症例に対する治療のポイント

    皆木 省吾

    九州歯科学会雑誌   69 ( 補冊 )   6 - 6   2015.4

     More details

    Language:Japanese   Publisher:九州歯科学会  

    researchmap

  • 口腔疾患の治療や口腔機能の維持・回復が全身の健康に与える影響に関するプロジェクト研究 歯科治療による口腔機能の改善が健康に及ぼす影響に関する臨床データベースの構築

    志賀 博, 横山 正起, 横山 敦郎, 坂口 究, 服部 佳功, 依田 信裕, 赤川 安正, 川良 美佐雄, 大川 周治, 祇園白 信仁, 小野 高裕, 前田 芳信, 皆木 省吾, 津賀 一弘, 鱒見 進一, 佐々木 啓一

    日本歯科医学会誌   34   69 - 73   2015.3

     More details

    Language:Japanese   Publisher:日本歯科医学会  

    歯科治療介入による口腔機能の改善が健康に及ぼす影響を明らかにする目的で、歯の欠損を有する患者の口腔機能を客観的に評価すると同時に、食品摂取状態、口腔内健康状態、全身の健康状態、栄養状態を調べた。口腔機能の客観的評価は、グミゼリー咀嚼時のグルコースの溶出量を咀嚼能力を表す指標とした。口腔機能の主観的評価は、食品摂取状態のアンケートによる咀嚼スコアとした。健康状態の評価は、口腔内の健康状態としてOHIP-14の合計点、全身健康状態としてSF-12の身体的サマリースコア(PCS)と精神的サマリースコア(MCS)、栄養状態として簡易栄養状態評価表(MNA)のスクリーニング値を選択した。各研究協力施設から、治療前のみのデータ(I-B群)、治療前後のデータ(II-B群、II-A群)、治療後のみのデータ(III-A群)を収集し、グルコースの溶出量、咀嚼スコア、OHIP-14、PCSとMCS、MNAについて、治療前と治療後との間で比較した。グルコースの溶出量と咀嚼スコアは、I-B群とII-B群がほぼ同じで、II-A群、III-A群の順で有意に多くなった。OHIP-14の合計点は、I-B群とII-B群がほぼ同じで、II-A群、III-A群の順で有意に小さくなった。PCSは、I-B群とIII-A群がほぼ同じで、II-B群、II-A群の順に大きくなる傾向を示した。MCSは、I-B群が最も小さく、II-B群、II-A群、III群の順に大きくなった。MNAのスクリーニング値は、I-B群とII-B群がほぼ同じで、II-A群、III-A群の順に有意に大きくなった。これらから、歯科補綴治療により口腔機能は改善し、口腔内の健康状態、全身の健康状態、栄養状態は改善、あるいは改善する傾向が認められた。(著者抄録)

    researchmap

  • 充填用グラスアイオノマーセメントの初期の歯質接着強さと曲げ特性 コーティング材塗布の効果

    入江 正郎, 田仲 持郎, 松本 卓也, 武田 宏明, 鳥井 康弘, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 長尾 紀幸

    日本歯科理工学会誌   34 ( 2 )   81 - 81   2015.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • Effect of nasal speaking valve on speech intelligibility under velopharyngeal incompetence: a questionnaire survey

    S. Mikamo, N. Kodama, Q. Pan, N. Maeda, S. Minagi

    JOURNAL OF ORAL REHABILITATION   42 ( 2 )   136 - 143   2015.2

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Velopharyngeal incompetence is known as a contributing factor to speech disorders. Suwaki etal. reported that nasal speaking valve (NSV) could improve dysarthria by regulating nasal emission utilising one-way valve. However, disease or condition which would be susceptible to treatment by NSV has not been clarified yet. This study aimed to evaluate the effect of NSV by questionnaire survey using ready-made NSV. Subjects were recruited through the internet bulletin, and NSV survey set was sent to the applicant. Sixty-six participants, who agreed to participate in this study, used NSV and mailed back the questionnaire which included self-evaluation and third-party evaluation of speech intelligibility. Statistical analysis revealed that the use of NSV resulted in significant speech intelligibility improvement in both self-evaluation and third-party evaluation (P&lt;001). Regarding the type of underlying disease of dysarthria, significant effect of NSV on self-evaluation of speech intelligibility could be observed in cerebrovascular disease and neurodegenerative disease (P&lt;001) and that on third-party evaluation in neurodegenerative disease (P&lt;001). Eighty-six percent of subjects showed improvement of speech intelligibility by shutting up nostrils by fingers, and the significant effect of NSV on both self-evaluation and third-party evaluation of speech intelligibility was observed (P&lt;0001). From the results of this study, it was suggested that NSV would be effective in cerebrovascular disease and neurodegenerative disease, as well as in subjects whose speech intelligibility was improved by closing nostrils.

    DOI: 10.1111/joor.12237

    Web of Science

    researchmap

  • Force exertion and loading in stomatognathic system

    Minagi Shogo, Kumazaki Yohei, Kawakami Shigehisa

    Annals of Japan Prosthodontic Society   7 ( 4 )   345 - 350   2015

     More details

    Language:Japanese   Publisher:Japan Prosthodontic Society  

    咀嚼筋群によって発揮される力は顎口腔系に大きな影響を及ぼす.近年まで,この顎口腔系にかかる力のうち重要なものの一つとして,夜間ブラキシズムが長く注目されてきた.しかし最近の研究によって,咀嚼筋群の活動に関する知見が大きく変容しつつある.携帯型の高精度筋電計を用いて終日筋電図の記録・解析が可能となったことによる生物学的インパクトは大きく,これまでに原因の分からなかった臨床上の現象に対して覚醒時筋活動の視点から説明がつきはじめているものもある.本稿では,これらの方法論および集積されつつある最新の知見を含めて,顎口腔系への力の影響を考察した.

    CiNii Article

    researchmap

  • Flexural properties of polyethylene, glass and carbon fiber-reinforced resin composites for prosthetic frameworks

    Yukinori Maruo, Goro Nishigawa, Masao Irie, Kumiko Yoshihara, Shogo Minagi

    ACTA ODONTOLOGICA SCANDINAVICA   73 ( 8 )   581 - 587   2015

     More details

    Language:English   Publisher:TAYLOR & FRANCIS LTD  

    Objective. High flexural properties are needed for fixed partial denture or implant prosthesis to resist susceptibility to failures caused by occlusal overload. The aim of this investigation was to clarify the effects of four different kinds of fibers on the flexural properties of fiber-reinforced composites. Materials and methods. Polyethylene fiber, glass fiber and two types of carbon fibers were used for reinforcement. Seven groups of specimens, 2 x 2 x 25 mm, were prepared (n = 10 per group). Four groups of resin composite specimens were reinforced with polyethylene, glass or one type of carbon fiber. The remaining three groups served as controls, with each group comprising one brand of resin composite without any fiber. After 24-h water storage in 37 degrees C distilled water, the flexural properties of each specimen were examined with static three-point flexural test at a crosshead speed of 0.5 mm/min. Results. Compared to the control without any fiber, glass and carbon fibers significantly increased the flexural strength (p &lt; 0.05). On the contrary, the polyethylene fiber decreased the flexural strength (p &lt; 0.05). Among the fibers, carbon fiber exhibited higher flexural strength than glass fiber (p &lt; 0.05). Similar trends were observed for flexural modulus and fracture energy. However, there was no significant difference in fracture energy between carbon and glass fibers (p &gt; 0.05). Conclusion. Fibers could, therefore, improve the flexural properties of resin composite and carbon fibers in longitudinal form yielded the better effects for reinforcement.

    DOI: 10.3109/00016357.2014.958875

    Web of Science

    researchmap

  • Force exertion and loading in stomatognathic system

    皆木省吾, 熊崎洋平, 川上滋央

    日本補綴歯科学会誌(Web)   7 ( 4 )   345‐350 (J‐STAGE)   2015

     More details

  • レジンセメントのCAD/CAM用レジンブロックに対する歯質接着強さに及ぼすサンドブラスト処理の影響.

    入江正郎, 田仲持郎, 松本卓也, 丸尾幸憲, 西川悟郎, 皆木省吾, 吉原久美子

    接着歯学   33 ( 4 )   181 - 186   2015

     More details

  • Dysarthria患者に対する構音訓練中の舌根部挙上動態にVisual biofeedbackが与える影響

    矢野実郎, 萬田陽介, 瀋秋月, 前田直人, 沖和広, 皆木省吾

    岡山歯学会雑誌   33 ( 2 )   44 - 44   2014.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    J-GLOBAL

    researchmap

  • Nasal Speaking Valveの効果に関する報告―短期的効果に関する調査結果および,使用により鼻咽腔閉鎖不全が機能的に改善された一症例―

    美甘真, 兒玉直紀, 前田直人, PAN Qiuyue, 西川悟郎, 皆木省吾

    顎顔面補綴   37 ( 2 )   88 - 88   2014.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    J-GLOBAL

    researchmap

  • 嚥下訓練に併行して、嚥下補助装置の応用とボツリヌス療法を行い全量経口摂取可能となった小脳・脳幹梗塞の1例

    池野 雅裕, 熊倉 勇美, 皆木 省吾, 目谷 浩通, 青柳 陽一郎

    顎顔面補綴   37 ( 2 )   64 - 68   2014.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    60歳男。頭痛と意識障害で救急搬送され、くも膜下出血及び後下小脳動脈の解離性動脈瘤と診断された。翌日、右後下小脳動脈塞栓術を施行し、術後、脳血管攣縮により右小脳及び脳幹梗塞を発症した。日常生活に最低限必要な基本的動作(ADL)は自立したが嚥下障害が残存し、胃瘻を増設後、嚥下障害のリハビリテーション目的で回復期リハビリテーション病院に転院した。ゼリーを用いた直接嚥下訓練を開始した。退院後、自宅では、お粥を少量摂取できていたが、次第に嚥下の際に喉の通過に違和感が出現し、それまで嚥下できていた物も飲み込めなくなった。外来通院訓練にて摂食・嚥下機能訓練を開始した。訓練開始後12ヵ月で、食事場面において時折咽頭への送り込みが困難な場合があり、送り込みを意識させるための声かけが必要であったが、平均30〜40分程度で常食の全量摂取が可能となった。

    researchmap

  • 咀嚼による顎関節への機械的負荷は関節円板前方転位患者の顎関節疼痛発現に関与するか?

    平田 敦俊, 熊崎 洋平, 川上 滋央, 山本 美恵, 宮崎 貴子, 美甘 真, 兒玉 直紀, 原 哲也, 沖 和広, 皆木 省吾

    岡山歯学会雑誌   33 ( 2 )   43 - 43   2014.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 咬合違和感を訴える患者の実態に関する多施設実態調査

    澁谷 智明, 和気 裕之, 玉置 勝司, 島田 淳, 古谷野 潔, 鱒見 進一, 窪木 拓男, 皆木 省吾, 貞森 紳丞, 矢谷 博文, 藤澤 政紀, 林 勝彦, 玉井 和樹, 成田 紀之, 原 節宏, 馬場 一美, 尾口 仁志, 金村 清孝, 山口 泰彦, 西川 洋二, 塚原 宏泰, 松香 芳三, 葉山 莉香

    日本顎関節学会雑誌   26 ( 3 )   196 - 203   2014.12

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    目的:多施設にて咬合違和感を訴える患者に関するデータ収集を行い、その実態を調査することを目的とした。対象および方法:各施設を受診した咬合違和感を訴える患者202症例中、調査票で転帰が明らかな180症例を対象とした。患者調査票を作成し、受診までの項目(性別、年齢、病悩期間、主訴の分類、咬合違和感を感じる歯、咬合違和感を感じる部位、咬合違和感を感じる歯の状態、前医でこれまでに受けた治療法)について分析した。結果:性別では男性37名、女性143名で女性に多かった。年齢の中央値(25パーセンタイル、75パーセンタイル)は55.0(42.0、65.0)歳であった(18〜86歳)。また病悩期間の中央値は5(1、13)ヵ月で発症後6ヵ月未満が著明に多かった(発症直後〜360ヵ月)。主訴は「咬頭嵌合位の歯の接触状態に関する訴え」が最も多かった。咬合違和感を感じる歯は大臼歯が多かったが前歯にも認められた。咬合違和感を感じる部位では片側だけでなく、両側の場合などさまざまであったが、全体的に感じる患者も多かった。咬合違和感を感じる歯の状態は金属の補綴装置を装着されている場合が多かったが、天然歯の場合も多かった。前医で行われた治療は補綴歯科治療が多かった。結語:性別、年齢などはいままでの報告と同様であったが、病悩期間はやや異なっていた。また患者は、さまざまな部位で治療後の歯だけでなく天然歯にも違和感を感じていた。(著者抄録)

    researchmap

  • セルフアドヘッシブ・レジンセメントの劣化加速試験後の機械的特性

    入江 正郎, 田仲 持郎, 松本 卓也, 長岡 紀幸, 丸尾 幸憲, 西川 悟郎, 皆木 省吾, 吉山 昌宏

    接着歯学   32 ( 3 )   166 - 166   2014.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • ニケイ酸リチウムガラスとレジンセメントの接着 シラン処理材の影響

    丸尾 幸憲, 西川 悟郎, 入江 正郎, 吉原 久美子, 長岡 紀幸, 松本 卓也, 皆木 省吾

    接着歯学   32 ( 3 )   175 - 175   2014.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 咀嚼能率の向上と義歯疼痛軽減を目指した人工歯咬合面形態の機能的評価

    橋本 有希, 杉本 恭子, 田中 祐貴, 皆木 省吾

    日本咀嚼学会雑誌   24 ( 2 )   96 - 97   2014.11

     More details

    Language:Japanese   Publisher:(NPO)日本咀嚼学会  

    researchmap

  • Effect of occlusal rehabilitation on spatial memory and hippocampal neurons after long-term loss of molars in rats

    S. Sakamoto, T. Hara, A. Kurozumi, M. Oka, C. Kuroda-Ishimine, D. Araki, S. Iida, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 10 )   715 - 722   2014.10

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Experimental loss of occlusal support caused by the extraction or grinding of molar teeth has been reported to foment the impairment of learning and memory in laboratory animals. The purpose of this study was to examine the effect of occlusal reconstruction after long-term loss of molars on spatial memory by using 8-arm radial maze and by assessing histopathological changes of neuron density in the hippocampus. Experimental dentures were inserted into the oral cavities of molarless rats to recover the occlusal support. Age-matched groups of control, molarless and denture-wearing rats were trained to perform the maze tasks. The difference of the error incidence in the maze task was evaluated between three groups. The difference of neuron density between three groups was also evaluated at the end of the maze task. Serum corticosterone levels were also measured to estimate the chronic stress, which could be caused by extraction, insertion of the experimental denture or any experimental procedure. The error incidence in the denture-wearing group was significantly higher than that of the control group, but significantly lower than that of the molarless group. Significant differences of neuron density were observed between three groups in each of the hippocampal CA1, CA3 and DG subfields. No significant difference of the serum corticosterone levels between three groups could be observed. From the results of this study, it was suggested that the recovery of occlusal support would bring amelioration of cognitive impairment concomitant with long period loss of molars in rats.

    DOI: 10.1111/joor.12198

    Web of Science

    researchmap

  • A new quantitative screening method for removable prosthesis using pressure-indicating paste

    T. Sanagawa, T. Hara, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 10 )   737 - 743   2014.10

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Aim of this study was to quantitatively evaluate the adaptation of the denture base to the mucosa using a non-setting pressure-indicating paste and to examine the relationship between quality of fit and the need for denture relining. A total of 123 dentures from 70 partially edentulous patients were studied. Examination paste extruded from the tip of the 18-G needle was applied to those denture surfaces contacting the alveolar crest. The denture was manually positioned with all clasps engaged on abutment teeth, and adaptation was assessed through paste distribution. Multiple logistic regression was used to analyse variables associated with diagnosing the need for a denture reline, producing odds ratios and 95% confidence intervals. The spread width was inversely proportional to the gap between the denture and mucosa. Regression analysis revealed statistically significant associations between the need for a denture reline and both the paste spread width and the duration of denture use. According to ROC curve analysis of the reline' and non-reline' groups, the need for a denture reline was indicated at a paste spread width of 20mm or less. At this 20-mm threshold, the sensitivity was 851% and the specificity was 750%. The fit of removable denture bases was quantitatively evaluated by measuring the spread width of non-setting pressure-indicating paste extruded onto denture fit surfaces. The results suggest that the paste spread width is a useful parameter for discriminating the need for a denture reline.

    DOI: 10.1111/joor.12200

    Web of Science

    researchmap

  • Effect of occlusal rehabilitation on spatial memory and hippocampal neurons after long-term loss of molars in rats

    S. Sakamoto, T. Hara, A. Kurozumi, M. Oka, C. Kuroda-Ishimine, D. Araki, S. Iida, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 10 )   715 - 722   2014.10

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Experimental loss of occlusal support caused by the extraction or grinding of molar teeth has been reported to foment the impairment of learning and memory in laboratory animals. The purpose of this study was to examine the effect of occlusal reconstruction after long-term loss of molars on spatial memory by using 8-arm radial maze and by assessing histopathological changes of neuron density in the hippocampus. Experimental dentures were inserted into the oral cavities of molarless rats to recover the occlusal support. Age-matched groups of control, molarless and denture-wearing rats were trained to perform the maze tasks. The difference of the error incidence in the maze task was evaluated between three groups. The difference of neuron density between three groups was also evaluated at the end of the maze task. Serum corticosterone levels were also measured to estimate the chronic stress, which could be caused by extraction, insertion of the experimental denture or any experimental procedure. The error incidence in the denture-wearing group was significantly higher than that of the control group, but significantly lower than that of the molarless group. Significant differences of neuron density were observed between three groups in each of the hippocampal CA1, CA3 and DG subfields. No significant difference of the serum corticosterone levels between three groups could be observed. From the results of this study, it was suggested that the recovery of occlusal support would bring amelioration of cognitive impairment concomitant with long period loss of molars in rats.

    DOI: 10.1111/joor.12198

    Web of Science

    researchmap

  • Particle analysis for the evaluation of masticatory efficiency

    皆木省吾, 田中祐貴, 橋本有希, 杉本恭子

    日本顎口腔機能学会雑誌   21 ( 1 )   8 - 20   2014.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    咀嚼に関する研究の中心となってきた歯科医学に多くの知識が存在するにもかかわらず、現在の高齢者の食に関する決定に対する歯科医師の関与はわずか3.1%にすぎず非常に少ないことが報告されている。摂食には多くの要因が関与するため例えば義歯装着等によって食形態を変更できるかどうかの総合的かつ客観的判断も現時点では困難とされており歯学領域でこれまで蓄積されてきた知識は活用されているとは言い難い。この観点から考えると、日常的に摂取している自然食品の咀嚼評価を、食レベル決定のための臨床判断基準として用いることには重要なニーズがあると考えられる。多種多様な日常食品を咀嚼・嚥下する実際の高齢者の食生活を考慮すれば、咀嚼能率の評価は単純化・普遍化から離れて、個々の患者の嗜好なども含めたオーダーメイド化された評価を目指すことが望まれる。本稿ではこれまでに報告された種々の食品の粒度解析関連の研究を紹介するとともに食レベル決定への関与の可能性という観点からまとめたものである。(著者抄録)

    DOI: 10.7144/sgf.21.8

    CiNii Article

    J-GLOBAL

    researchmap

  • 日常生活における動作が携帯型筋電計に及ぼす影響

    川上滋央, 熊崎洋平, 美甘真, 平田敦俊, 沖和広, 皆木省吾

    日本顎口腔機能学会雑誌   21 ( 1 )   60 - 61   2014.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    DOI: 10.7144/sgf.21.60

    J-GLOBAL

    researchmap

  • 咬合支持の喪失が記憶学習と酸化ストレスに及ぼす影響

    宮崎 貴子, 原 哲也, 伊志嶺 知沙, 坂本 隼一, 荒木 大介, 飯田 祥与, 清瀧 優也, 皆木 省吾

    老年歯科医学   29 ( 2 )   181 - 181   2014.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 渋味溶液の舌刺激によるラット舌神経と鼓索神経の応答と温度覚との関連

    美甘 真, 兒玉 直紀, 美藤 純弘, 小橋 基, 皆木 省吾, 松尾 龍二

    Journal of Oral Biosciences Supplement   2014   148 - 148   2014.9

     More details

    Language:Japanese   Publisher:(一社)歯科基礎医学会  

    researchmap

  • Masticatory efficiency in complete denture wearers with reduced dental arches - a randomised cross-over study

    C. M. Iegami, W. F. Barbosa, R. J. Furuyama, J. R. B. Lima, T. T. de Campos, S. Minagi, R. Tamaki

    JOURNAL OF ORAL REHABILITATION   41 ( 8 )   619 - 623   2014.8

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    One obstacle to placing artificial posterior teeth in manufacturing complete dentures is a reduction of the space between the maxilla and the mandible. Occasionally, second molar placement is not performed, as it does not affect aesthetics, phonetics or comfort. The aim of this study was to compare the masticatory efficiency between patients wearing maxillary and mandibular complete dentures with reduced dental arches (without second molars) (WSM) and with full dental arches (FDA). Twenty subjects were divided into two groups and randomly received new complete dentures. Patients in Group 1 were given dentures WSM, and those in Group 2 were given dentures with FDA. After the post-placement visits, an initial masticatory efficiency test was performed with Optocal, an artificial test food. Fifteen days later, second molars were placed in Group 1 and removed from Group 2, and a new test was performed. Comminuted material was treated and sieved under vibration. The mean and standard deviation of masticatory efficiency with FDA were 10.4 and 8.1, respectively. In the tests WSM, the mean and standard deviation were 8.4 and 3.3, respectively. After removing the second molars in Group 2 and adding them in Group 1, the mean and standard deviation were 15.7 and 14.7 for Group 1 and 12.5 and 10.4 for Group 2, respectively. Within the limitations of this study, placing artificial teeth up to the first molars can be performed when needed without compromising masticatory efficiency.

    DOI: 10.1111/joor.12179

    Web of Science

    researchmap

  • Masticatory efficiency in complete denture wearers with reduced dental arches - a randomised cross-over study

    C. M. Iegami, W. F. Barbosa, R. J. Furuyama, J. R. B. Lima, T. T. de Campos, S. Minagi, R. Tamaki

    JOURNAL OF ORAL REHABILITATION   41 ( 8 )   619 - 623   2014.8

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    One obstacle to placing artificial posterior teeth in manufacturing complete dentures is a reduction of the space between the maxilla and the mandible. Occasionally, second molar placement is not performed, as it does not affect aesthetics, phonetics or comfort. The aim of this study was to compare the masticatory efficiency between patients wearing maxillary and mandibular complete dentures with reduced dental arches (without second molars) (WSM) and with full dental arches (FDA). Twenty subjects were divided into two groups and randomly received new complete dentures. Patients in Group 1 were given dentures WSM, and those in Group 2 were given dentures with FDA. After the post-placement visits, an initial masticatory efficiency test was performed with Optocal, an artificial test food. Fifteen days later, second molars were placed in Group 1 and removed from Group 2, and a new test was performed. Comminuted material was treated and sieved under vibration. The mean and standard deviation of masticatory efficiency with FDA were 10.4 and 8.1, respectively. In the tests WSM, the mean and standard deviation were 8.4 and 3.3, respectively. After removing the second molars in Group 2 and adding them in Group 1, the mean and standard deviation were 15.7 and 14.7 for Group 1 and 12.5 and 10.4 for Group 2, respectively. Within the limitations of this study, placing artificial teeth up to the first molars can be performed when needed without compromising masticatory efficiency.

    DOI: 10.1111/joor.12179

    Web of Science

    researchmap

  • 音声センサ併用の終日EMGは顎関節症治療を変える 下顎異常機能の特徴が示された1症例

    熊崎 洋平, 川上 滋央, Acing Habibie Mude, 加藤 聖也, 潘 秋月, 沖 和広, 皆木 省吾

    日本顎関節学会雑誌   26 ( Suppl. )   127 - 127   2014.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • Vertical and horizontal polymerization shrinkage in composite restorations

    Masao Irie, Jiro Tanaka, Yukinori Maruo, Goro Nishigawa

    DENTAL MATERIALS   30 ( 7 )   E189 - E198   2014.7

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objectives. Polymerization shrinkage developed in vertical and horizontal directions after light activation of light-curing composite restorative materials. The purpose of this study was to examine the effects of vertical and horizontal polymerization shrinkage on: (a) dimensional changes of resin composites in tooth cavities; (b) shear bond strengths to enamel and dentin; and (c) marginal gap width in a non-reacting Teflon mold.
    Methods. Vertical and horizontal polymerization shrinkage in tooth cavities were measured immediately (3 min) after light activation. With the same time lapse, shear bond strengths to enamel and dentin and marginal gap widths in Teflon mold were also measured.
    Results. There was a significant correlation between vertical and horizontal polymerization shrinkage (r = 0.647, p = 0.043) in the tooth cavity. Composite materials which produced small vertical shrinkage also produced smaller horizontal shrinkage. Composite materials which produced small vertical shrinkage in the tooth cavity exhibited greater shear bond strengths to both enamel (r = -0.697, p = 0.025) and dentin (r = -0.752, p = 0.012). Composite materials which produced smaller horizontal shrinkage produced smaller marginal gap widths in the Teflon mold (r = 0.829, p = 0.003). No relationships were observed between horizontal shrinkage in the tooth cavity and shear bond strengths to both enamel and dentin (p &gt; 0.05).
    Significance. During the early stage of setting (&lt;3 min) in tooth cavities, the vertical shrinkage of light-activated composite restorative materials was correlated with horizontal shrinkage. (C) 2014 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2014.02.018

    Web of Science

    researchmap

  • Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression

    Shigehisa Kawakami, Yohei Kumazaki, Yosuke Manda, Kazuhiro Oki, Shogo Minagi

    PLOS ONE   9 ( 7 )   2014.7

     More details

    Language:English   Publisher:PUBLIC LIBRARY SCIENCE  

    Aim: The role of parafunctional masticatory muscle activity in tooth loss has not been fully clarified. This study aimed to reveal the characteristic activity of masseter muscles in bite collapse patients while awake and asleep.
    Materials and Methods: Six progressive bite collapse patients (PBC group), six age-and gender-matched control subjects (MC group), and six young control subjects (YC group) were enrolled. Electromyograms (EMG) of the masseter muscles were continuously recorded with an ambulatory EMG recorder while patients were awake and asleep. Diurnal and nocturnal parafunctional EMG activity was classified as phasic, tonic, or mixed using an EMG threshold of 20% maximal voluntary clenching.
    Results: Highly extended diurnal phasic activity was observed only in the PBC group. The three groups had significantly different mean diurnal phasic episodes per hour, with 13.29 +/- 7.18 per hour in the PBC group, 0.95 +/- 0.97 per hour in the MC group, and 0.87 +/- 0.98 per hour in the YC group (p&lt;0.01). ROC curve analysis suggested that the number of diurnal phasic episodes might be used to predict bite collapsing tooth loss.
    Conclusion: Extensive bite loss might be related to diurnal masticatory muscle parafunction but not to parafunction during sleep.
    Clinical Relevance: Scientific rationale for study: Although mandibular parafunction has been implicated in stomatognathic system breakdown, a causal relationship has not been established because scientific modalities to evaluate parafunctional activity have been lacking.
    Principal findings: This study used a newly developed EMG recording system that evaluates masseter muscle activity throughout the day. Our results challenge the stereotypical idea of nocturnal bruxism as a strong destructive force. We found that diurnal phasic masticatory muscle activity was most characteristic in patients with progressive bite collapse.
    Practical implications: The incidence of diurnal phasic contractions could be used for the prognostic evaluation of stomatognathic system stability.

    DOI: 10.1371/journal.pone.0101882

    Web of Science

    researchmap

  • Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression

    Shigehisa Kawakami, Yohei Kumazaki, Yosuke Manda, Kazuhiro Oki, Shogo Minagi

    PLOS ONE   9 ( 7 )   2014.7

     More details

    Language:English   Publisher:PUBLIC LIBRARY SCIENCE  

    Aim: The role of parafunctional masticatory muscle activity in tooth loss has not been fully clarified. This study aimed to reveal the characteristic activity of masseter muscles in bite collapse patients while awake and asleep.
    Materials and Methods: Six progressive bite collapse patients (PBC group), six age-and gender-matched control subjects (MC group), and six young control subjects (YC group) were enrolled. Electromyograms (EMG) of the masseter muscles were continuously recorded with an ambulatory EMG recorder while patients were awake and asleep. Diurnal and nocturnal parafunctional EMG activity was classified as phasic, tonic, or mixed using an EMG threshold of 20% maximal voluntary clenching.
    Results: Highly extended diurnal phasic activity was observed only in the PBC group. The three groups had significantly different mean diurnal phasic episodes per hour, with 13.29 +/- 7.18 per hour in the PBC group, 0.95 +/- 0.97 per hour in the MC group, and 0.87 +/- 0.98 per hour in the YC group (p&lt;0.01). ROC curve analysis suggested that the number of diurnal phasic episodes might be used to predict bite collapsing tooth loss.
    Conclusion: Extensive bite loss might be related to diurnal masticatory muscle parafunction but not to parafunction during sleep.
    Clinical Relevance: Scientific rationale for study: Although mandibular parafunction has been implicated in stomatognathic system breakdown, a causal relationship has not been established because scientific modalities to evaluate parafunctional activity have been lacking.
    Principal findings: This study used a newly developed EMG recording system that evaluates masseter muscle activity throughout the day. Our results challenge the stereotypical idea of nocturnal bruxism as a strong destructive force. We found that diurnal phasic masticatory muscle activity was most characteristic in patients with progressive bite collapse.
    Practical implications: The incidence of diurnal phasic contractions could be used for the prognostic evaluation of stomatognathic system stability.

    DOI: 10.1371/journal.pone.0101882

    Web of Science

    researchmap

  • 咬合支持の喪失が記憶学習と酸化ストレスに及ぼす影響

    宮崎 貴子, 原 哲也, 伊志嶺 知沙, 荒木 大介, 飯田 祥与, 清瀧 優也, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   25回   173 - 173   2014.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 日中に観察される咀嚼筋活動が顎口腔系に及ぼす影響に関する研究

    皆木 省吾

    日本全身咬合学会雑誌   20 ( 1 )   17 - 17   2014.6

     More details

    Language:Japanese   Publisher:(一社)日本全身咬合学会  

    researchmap

  • レーザー光を用いた全部床義歯用フェイスボウの試作 その特徴と精度に関する考察

    岡本 信, 前田 直人, 山本 美恵, 守屋 佳典, 鵜川 由紀子, 洲脇 道弘, 角谷 真一, 森 慎吾, 崎谷 公子, 中島 啓一朗, 沖 和広, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   6 ( 特別号 )   183 - 183   2014.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 義歯疼痛の軽減と咀嚼可能食品の多様化を目的とした高咀嚼能率 人工歯形態の開発

    橋本 有希, 杉本 恭子, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   6 ( 特別号 )   195 - 195   2014.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • ブラキシズムの定量的解析による歯牙欠損進行のリスク評価

    川上 滋央, 熊崎 洋平, 萬田 陽介, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   6 ( 特別号 )   279 - 279   2014.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 補綴専門医としての全部床義歯のスキル 在宅など超高齢者への義歯治療スキル

    皆木 省吾

    日本補綴歯科学会誌   6 ( 特別号 )   88 - 88   2014.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Development of a speech-discriminating electromyogram system for routine ambulatory recordings for the low-level masseter muscle activity

    Y. Kumazaki, M. Naito, S. Kawakami, A. Hirata, K. Oki, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 4 )   266 - 274   2014.4

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Previous work suggests a relationship between sustained low-level tooth clenching and the aetiology of myogenous temporomandibular disorder (TMD) pain. This study aimed to establish a reliable system with which to evaluate low-level electromyographic (EMG) activity related to low-level tooth clenching while discriminating speech activity, which is one of the most common facial muscle activities to be discriminated from low-level clenching. This device should facilitate the clinical evaluation of awake muscle activity in TMD patients. Eight female and eight male subjects (38 center dot 9 +/- 11 center dot 3years) participated in the study to evaluate the validity of estimation of speech duration. Actual speech duration was defined by one examiner by pointing out the timing of beginning and end point of each speech on wave-editing software. Speech duration, as detected by a voice sensor system, which was activated by a voice loudness of 54 center dot 71 +/- 5 center dot 00 dB, was significantly correlated with the above actual speech duration (P&lt;0 center dot 01, R-2=0 center dot 9935). An actual recording with the system was carried out in one TMD patient and one healthy volunteer and revealed that the duration of diurnal EMG activity higher than 5% MVC was 1649 center dot 16s and 95 center dot 99s, respectively. As the voice sensor system adopted in this study could define the exact onset and offset of each segment of speech, EMG activity during speech could be precisely discriminated. The results of this study demonstrate that the EMG system with voice sensor system would be an effective tool for the evaluation of low-level masticatory muscle activity.

    DOI: 10.1111/joor.12138

    Web of Science

    researchmap

  • A new posture measurement method for measuring intrinsic standing posture

    Shigehisa Kawakami, Naoki Kodama, Naoto Maeda, Shunichi Sakamoto, Shogo Minagi

    CRANIO-THE JOURNAL OF CRANIOMANDIBULAR PRACTICE   32 ( 2 )   98 - 103   2014.4

     More details

    Language:English   Publisher:TAYLOR & FRANCIS LTD  

    Aims: Although body posture in relation to the dental condition has been of great interest in the dental profession, rumination bias has been a substantial obstacle to achieving a reliable objective evaluation of the intrinsic body posture. The aim of this study was to establish a posture control protocol that would minimize the effect of bias.
    Methodology: Fifteen healthy male volunteers (23-33 years of age) participated in this study. The posture movement was recorded for 10 seconds by a three-dimensional motion capture system. The experiment was performed on four different days.
    Results: The posture was most stable at 4-5 seconds after the start of the front bulb gaze (the mean coefficient of variation ranged from 0.1 to 44.1). The intraclass correlation coefficients for four days were 0.871-0.975 (P &lt;= 0.001).
    Conclusions: It was concluded that the use of this measurement method helped in producing a reliable intrinsic standing posture where unbiased evaluation of the effect of any intervention on the body posture is researched.

    DOI: 10.1179/0886963413Z.00000000014

    Web of Science

    researchmap

  • Development of a speech-discriminating electromyogram system for routine ambulatory recordings for the low-level masseter muscle activity

    Y. Kumazaki, M. Naito, S. Kawakami, A. Hirata, K. Oki, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 4 )   266 - 274   2014.4

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Previous work suggests a relationship between sustained low-level tooth clenching and the aetiology of myogenous temporomandibular disorder (TMD) pain. This study aimed to establish a reliable system with which to evaluate low-level electromyographic (EMG) activity related to low-level tooth clenching while discriminating speech activity, which is one of the most common facial muscle activities to be discriminated from low-level clenching. This device should facilitate the clinical evaluation of awake muscle activity in TMD patients. Eight female and eight male subjects (38 center dot 9 +/- 11 center dot 3years) participated in the study to evaluate the validity of estimation of speech duration. Actual speech duration was defined by one examiner by pointing out the timing of beginning and end point of each speech on wave-editing software. Speech duration, as detected by a voice sensor system, which was activated by a voice loudness of 54 center dot 71 +/- 5 center dot 00 dB, was significantly correlated with the above actual speech duration (P&lt;0 center dot 01, R-2=0 center dot 9935). An actual recording with the system was carried out in one TMD patient and one healthy volunteer and revealed that the duration of diurnal EMG activity higher than 5% MVC was 1649 center dot 16s and 95 center dot 99s, respectively. As the voice sensor system adopted in this study could define the exact onset and offset of each segment of speech, EMG activity during speech could be precisely discriminated. The results of this study demonstrate that the EMG system with voice sensor system would be an effective tool for the evaluation of low-level masticatory muscle activity.

    DOI: 10.1111/joor.12138

    Web of Science

    researchmap

  • 二官能メタクリレートの添加が即時重合レジンの重合収縮に与える影響

    山本 美恵, 丸尾 幸憲, 入江 正郎, 西川 悟郎, 松本 卓也, 皆木 省吾

    日本歯科理工学会誌   33 ( 2 )   121 - 121   2014.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 表情筋の影響を考慮した高精度携帯型筋電計の表面電極貼付部位探索研究

    川上 滋央, 熊崎 洋平, 美甘 真, 平田 敦俊, 沖 和広, 皆木 省吾

    日本顎口腔機能学会雑誌   20 ( 2 )   148 - 149   2014.3

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    表情筋の影響を考慮した高精度携帯型筋電計の表面電極貼付部位について検討した。健常成人7例を対象とした。咬筋中央部、咬筋後縁部、下顎角下縁部のいずれも、咬合力と筋電図振幅との間に高い相関関係を認め、いずれの貼付部位においても咀嚼筋の活動評価が可能であることが示唆された。また、咬筋中央部や咬筋後縁部と比較すると下顎角下縁部は笑筋の活動の影響が少ないことが観察された。咬筋後縁部、下顎角下縁部において咀嚼筋活動の定量評価が可能で、下顎角下縁部への表面筋電図電極貼付により、表情筋の影響を少なくできることが示された。

    researchmap

  • Image analysis of food particles can discriminate deficient mastication of mixed foodstuffs simulating daily meal

    K. Sugimoto, Y. Hashimoto, C. Fukuike, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 3 )   184 - 190   2014.3

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    DOI: 10.1111/joor.12133

    Web of Science

    researchmap

  • Image analysis of food particles can discriminate deficient mastication of mixed foodstuffs simulating daily meal

    K. Sugimoto, Y. Hashimoto, C. Fukuike, N. Kodama, S. Minagi

    JOURNAL OF ORAL REHABILITATION   41 ( 3 )   184 - 190   2014.3

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    DOI: 10.1111/joor.12133

    Web of Science

    researchmap

  • Memory-related gene expression profile of the male rat hippocampus induced by teeth extraction and occlusal support recovery

    Sachiyo Iida, Tetsuya Hara, Daisuke Araki, Chisa Ishimine-Kuroda, Akimasa Kurozumi, Shunichi Sakamoto, Takako Miyazaki, Shogo Minagi

    ARCHIVES OF ORAL BIOLOGY   59 ( 2 )   133 - 141   2014.2

     More details

    Language:English   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

    Objectives: The present study aimed to identify the effect of memory-related genes on male rats tested for spatial memory with either molar teeth extraction or its restoration by occlusal support using experimental dentures.
    Design: Memory-related genes were detected from hippocampi of male Wistar rats (exposed to teeth extraction with or without dentures, or no extraction (control)) (7-week old) after behavioural testing (via the radial maze task) using a DNA microarray. The time course of the expression of these genes was evaluated by quantitative real-time polymerase chain reaction (PCR) (on 49-week-old rats).
    Results: In preliminary experiments, to determine which memory genes are affected by spatial memory training, DNA microarray analysis revealed that thyrotropin-releasing hormone (Trh) and tenascin XA (Tnxa) were up-regulated and neuronatin (Nnat) and S100a9 were down-regulated after the maze training. The expression of Tnxa, Nnat and S100a9 of 49-week-old rats (during the time course) via quantitative real-time PCR was consistent with the results of microarrays of the preliminary experiment. Expression of Trh that was evaluated by quantitative real-time PCR did not agree with the results for this gene from the microarray for all groups. Therefore, expression of Trh may have increased in only young, trained rats. The expression of S100a9 prior to the maze task was down-regulated in only the extraction group.
    Conclusion: These results demonstrated that Trh, Tnxa and Nnat genes were affected according to the degree of memory in male rats. This study also indicated that S100a9 is a memory-related gene, which is affected by the presence of occlusal support. (C) 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.archoralbio.2013.10.003

    Web of Science

    researchmap

  • Memory-related gene expression profile of the male rat hippocampus induced by teeth extraction and occlusal support recovery

    Sachiyo Iida, Tetsuya Hara, Daisuke Araki, Chisa Ishimine-Kuroda, Akimasa Kurozumi, Shunichi Sakamoto, Takako Miyazaki, Shogo Minagi

    ARCHIVES OF ORAL BIOLOGY   59 ( 2 )   133 - 141   2014.2

     More details

    Language:English   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

    Objectives: The present study aimed to identify the effect of memory-related genes on male rats tested for spatial memory with either molar teeth extraction or its restoration by occlusal support using experimental dentures.
    Design: Memory-related genes were detected from hippocampi of male Wistar rats (exposed to teeth extraction with or without dentures, or no extraction (control)) (7-week old) after behavioural testing (via the radial maze task) using a DNA microarray. The time course of the expression of these genes was evaluated by quantitative real-time polymerase chain reaction (PCR) (on 49-week-old rats).
    Results: In preliminary experiments, to determine which memory genes are affected by spatial memory training, DNA microarray analysis revealed that thyrotropin-releasing hormone (Trh) and tenascin XA (Tnxa) were up-regulated and neuronatin (Nnat) and S100a9 were down-regulated after the maze training. The expression of Tnxa, Nnat and S100a9 of 49-week-old rats (during the time course) via quantitative real-time PCR was consistent with the results of microarrays of the preliminary experiment. Expression of Trh that was evaluated by quantitative real-time PCR did not agree with the results for this gene from the microarray for all groups. Therefore, expression of Trh may have increased in only young, trained rats. The expression of S100a9 prior to the maze task was down-regulated in only the extraction group.
    Conclusion: These results demonstrated that Trh, Tnxa and Nnat genes were affected according to the degree of memory in male rats. This study also indicated that S100a9 is a memory-related gene, which is affected by the presence of occlusal support. (C) 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.archoralbio.2013.10.003

    Web of Science

    researchmap

  • アンケート調査による既製Nasal Speaking Valve構音改善効果の検討

    美甘真, 兒玉直紀, 潘秋月, 皆木省吾

    音声言語医学   55 ( 1 )   60 - 60   2014.1

     More details

    Language:Japanese   Publisher:日本音声言語医学会  

    J-GLOBAL

    researchmap

  • Differential involvement of two cortical masticatory areas in submandibular salivary secretion in rats

    Naoto Maeda, Motoi Kobashi, Yoshihiro Mitoh, Masako Fujita, Shogo Minagi, Ryuji Matsuo

    BRAIN RESEARCH   1543   200 - 208   2014.1

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    To evaluate the role of the masticatory area in the cerebral cortex in the masticatory-salivary reflex, we investigated submandibular salivary secretion, jaw-movement trajectory and electromyographic activity of the jaw-opener (digastric) and jaw-closer (masseter) muscles evoked by repetitive electrical stimulation of the cortical masticatory area in anesthetized rats. Rats have two cortical masticatory areas: the anterior area (A-area) in the orofacial motor cortex, and the posterior area (P-area) in the insular cortex. Our defined P-area extended more caudally than the previous reported one. P-area stimulation induced vigorous salivary secretion (about 20 mu l/min) and rhythmical jaw movements (3-4 Hz) resembling masticatory movements. Salivary flow persisted even after minimizing jaw movements by curarization. A-area stimulation induced small and fast rhythmical jaw movements (6-8 Hz) resembling licking of solutions, but not salivary secretion. These findings suggest that P-area controls salivary secretion as well as mastication, and may be involved in the masticatory-salivary reflex. (C) 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.brainres.2013.11.024

    Web of Science

    researchmap

  • Differential involvement of two cortical masticatory areas in submandibular salivary secretion in rats

    Naoto Maeda, Motoi Kobashi, Yoshihiro Mitoh, Masako Fujita, Shogo Minagi, Ryuji Matsuo

    BRAIN RESEARCH   1543   200 - 208   2014.1

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    To evaluate the role of the masticatory area in the cerebral cortex in the masticatory-salivary reflex, we investigated submandibular salivary secretion, jaw-movement trajectory and electromyographic activity of the jaw-opener (digastric) and jaw-closer (masseter) muscles evoked by repetitive electrical stimulation of the cortical masticatory area in anesthetized rats. Rats have two cortical masticatory areas: the anterior area (A-area) in the orofacial motor cortex, and the posterior area (P-area) in the insular cortex. Our defined P-area extended more caudally than the previous reported one. P-area stimulation induced vigorous salivary secretion (about 20 mu l/min) and rhythmical jaw movements (3-4 Hz) resembling masticatory movements. Salivary flow persisted even after minimizing jaw movements by curarization. A-area stimulation induced small and fast rhythmical jaw movements (6-8 Hz) resembling licking of solutions, but not salivary secretion. These findings suggest that P-area controls salivary secretion as well as mastication, and may be involved in the masticatory-salivary reflex. (C) 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.brainres.2013.11.024

    Web of Science

    researchmap

  • 片側顎関節円板前方転位が片側かみしめ時の咬合力に及ぼす影響

    熊崎 洋平, 川上 滋央, 平田 敦俊, 福池 知穂, 山本 美恵, 宮崎 貴子, 美甘 真, 兒玉 直紀, 原 哲也, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   6 ( 1 )   E2 - E2   2014.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Sequential Coordination between Lingual and Pharyngeal Pressures Produced during Dry Swallowing

    Jitsuro Yano, Yoichiro Aoyagi, Takahiro Ono, Kazuhiro Hori, Wakami Yamaguchi, Shigehiro Fujiwara, Isami Kumakura, Shogo Minagi, Akio Tsubahara

    BIOMED RESEARCH INTERNATIONAL   2014   2014

     More details

    Language:English   Publisher:HINDAWI PUBLISHING CORPORATION  

    The aim of this study was to investigate oropharyngeal pressure flow dynamics during dry swallowing in ten healthy subjects. Tongue pressure (TP) was measured using a sensor sheet system with five measuring points on the hard palate, and pharyngeal pressure (PP) was measured using a manometric catheter with four measuring points. The order and correlations of sequential events, such as onset, peak, and offset times of pressure production, at each pressure measuring point were analyzed on the synchronized waveforms. Onset of TP was earlier than that of PP. The peak of TP did not show significant differences with the onset of PP, and it was earlier than that of PP. There was no significant difference between the offset of TP and PP. The onset of PP was temporally time-locked to the peak of TP, and there was an especially strong correlation between the onset of PP and TP at the posterior-median part on the hard palate. The offset of PP was temporally time-locked to that of TP. These results could be interpreted as providing an explanation for the generation of oropharyngeal pressure flow to ensure efficient bolus transport and safe swallowing.

    DOI: 10.1155/2014/691352

    Web of Science

    researchmap

  • コンポジットレジン修復の歯質接着強さの経時的推移.

    接着歯学   2014

     More details

  • 1017 Fundamental investigation of Laser Micro-drilling for Multi-layered Artificial Skin

    ASAKO Kiichi, OKAMOTO Yasuhiro, OKADA Akira, MINAGI Shogo, MAEDA Naoto, PAN Qiuyue, JIN Keiji, NISHIGAWA Goro

    2014 ( 52 )   "1017 - 1"-"1017-2"   2014

     More details

    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    CiNii Article

    CiNii Books

    researchmap

  • 擬似角化層と個人デジタルシェードガイドの概念を応用した多層化人工皮膚の作製 顔面補綴装置作製法の簡便化、高品質化を目指して

    潘 秋月, 前田 直人, 神 桂二, 坂本 隼一, 兒玉 直紀, 西川 悟郎, 皆木 省吾

    顎顔面補綴   36 ( 2 )   111 - 111   2013.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    researchmap

  • 嚥下リハビリテーションの経過で補綴装置を適用したWallenberg症候群の一例

    池野 雅裕, 熊倉 勇美, 皆木 省吾, 目谷 浩通

    顎顔面補綴   36 ( 2 )   116 - 116   2013.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    researchmap

  • 歯の欠損(すれ違い咬合)を誘発する覚醒時の咬みしめ検出とその診断基準

    川上 滋央, 熊崎 洋平, 内藤 万弥, 平田 敦俊, 福池 知穂, 萬田 陽介, 潘 秋月, Acing Habibie Mude, 兒玉 直紀, 沖 和広, 皆木 省吾

    岡山歯学会雑誌   32 ( 2 )   89 - 90   2013.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • レーザー加工による多層化人工皮膚への皮膚蒸泄水分排出孔の形成に関する研究

    前田 直人, 潘 秋月, 岡本 康寛, 岡田 晃, 神 桂二, 坂本 隼一, 兒玉 直紀, 西川 悟郎, 皆木 省吾

    顎顔面補綴   36 ( 2 )   110 - 111   2013.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    researchmap

  • 複数混合した食材を被験食として咀嚼能力を簡便に客観評価・診断する食塊粒度解析システムに関する研究

    杉本恭子, 橋本有希, 福池知穂, 兒玉直紀, 森山毅, 近藤良平, 皆木省吾

    日本咀嚼学会学術大会プログラム・抄録集   24th ( 2 )   37 - 103   2013.11

     More details

    Language:Japanese   Publisher:(NPO)日本咀嚼学会  

    J-GLOBAL

    researchmap

  • 最近のセルフアドヘッシヴ・レジンセメントの硬化初期における接着特性

    丸尾 幸憲, 西川 悟郎, 入江 正郎, 長岡 紀幸, 松本 卓也, 皆木 省吾

    接着歯学   31 ( 3 )   138 - 138   2013.11

     More details

    Language:Japanese   Publisher:(一社)日本接着歯学会  

    researchmap

  • 一剤式適合試験材を用いた義歯適合性の定量的診査方法の開発

    原哲也, 佐名川徹, 森慎吾, 白井肇, 皆木省吾

    老年歯科医学   28 ( 2 )   217 - 217   2013.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    J-GLOBAL

    researchmap

  • 既製Nasal Speaking Valveを用いた構音改善効果に関するアンケート調査

    美甘真, 兒玉直紀, 前田直人, 川上滋央, 沖和広, 皆木省吾

    老年歯科医学   28 ( 2 )   128 - 129   2013.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    J-GLOBAL

    researchmap

  • 周期的圧縮刺激はPGE2の産生を介して破骨細胞分化を誘導する

    荒木 大介, 原 哲也, 伊志嶺 知沙, 皆木 省吾

    Journal of Oral Biosciences Supplement   2013   109 - 109   2013.9

     More details

    Language:Japanese   Publisher:(一社)歯科基礎医学会  

    researchmap

  • ジルコニア表面に対するリン酸モノマー処理の検討

    長岡 紀幸, 玉田 宜之, 入江 正郎, 吉原 久美子, 吉田 靖弘, 西川 悟郎, 丸尾 幸憲, 松本 卓也, 皆木 省吾, 早川 聡

    日本歯科理工学会誌   32 ( 5 )   354 - 354   2013.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • タンニン酸の舌刺激に対するラット舌神経と鼓索神経の応答

    美甘 真, 兒玉 直紀, 美藤 純弘, 小橋 基, 皆木 省吾, 松尾 龍二

    Journal of Oral Biosciences Supplement   2013   149 - 149   2013.9

     More details

    Language:Japanese   Publisher:(一社)歯科基礎医学会  

    researchmap

  • ワールドカフェを用いた歯学部1年生の高齢者歯科に関する意識調査(第2報) 2011年度と2012年度の比較

    兒玉 直紀, 飯田 祥与, 前田 直人, 宮崎 貴子, 美甘 真, 川上 滋央, 西川 悟郎, 原 哲也, 皆木 省吾

    老年歯科医学   28 ( 2 )   233 - 234   2013.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • Adhesive interfacial interaction affected by different carbon-chain monomers

    Kumiko Yoshihara, Yasuhiro Yoshida, Noriyuki Nagaoka, Satoshi Hayakawa, Takumi Okihara, Jan De Munck, Yukinori Maruo, Goro Nishigawa, Shogo Minagi, Akiyoshi Osaka, Bart Van Meerbeek

    DENTAL MATERIALS   29 ( 8 )   888 - 897   2013.8

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objectives. The functional monomer 10-methacryloxydecyl dihydrogen phosphate (10-MDP), recently used in more self-etch adhesives, chemically bonds to hydroxyapatite (HAp) and thus tooth tissue. Although the interfacial interaction of the phosphoric-acid functional group of 10-MDP with HAp-based substrates has well been documented, the effect of the long carbon-chain spacer of 10-MDP on the bonding effectiveness is far from understood.
    Methods. We investigated three phosphoric-acid monomers, 2-methacryloyloxyethyl dihydrogen phosphate (2-MEP), 6-methacryloyloxyhexyl dihydrogen phosphate (6-MHP) and 10-MDP, that only differed for the length of the carbon chain, on their chemical interaction potential with HAp and dentin, this correlatively using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Commercial 6-MHP and 10-MDP containing adhesives were investigated as well.
    Results. XRD revealed that on HAp only 10-MDP produced monomer-calcium salts in the form of 'nano-layering', while on dentin all monomers produced 'nano-layering', but with a varying intensity in the order of 10-MDP &gt; 6-MHP &gt; 2-MEP. TEM confirmed that 10-MDP formed the thickest hybrid and adhesive layer. XRD and TEM revealed 'nano-layering' for all commercial adhesives on dentin, though less intensively for the 6-MHP containing adhesive than for the 10-MDP ones.
    Significance. It is concluded that not only the phosphoric-acid group but also the spacer group, and its length, affect the chemical interaction potential with HAp and dentin. In addition, the relatively strong 'etching'' effect of 10-MDP forms more stable monomer-Ca salts, or 'nano-layering', than the two shorter carbon-chain monomers tested, thereby explaining, at least in part, the better bond durability documented with 10-MDP containing adhesives. (c) 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2013.05.006

    Web of Science

    researchmap

  • Effect of transient occlusal loading on the threshold of tooth tactile sensation perception for tapping like the impulsive stimulation

    Yuta Morimoto, Kazuhiro Oki, Sachiyo Iida, Chieko Shirahige, Naoto Maeda, Shigehisa Kawakami, Tadashi Matsunaga, Shogo Minagi

    ODONTOLOGY   101 ( 2 )   199 - 203   2013.7

     More details

    Language:English   Publisher:SPRINGER  

    The objectives of this study were (1) to establish a reliable method for detecting the force threshold of the tooth tactile sensation while avoiding experimenter bias and (2) to examine the effect of occlusal force loading on the threshold for impulsive force stimulation in subjects with normal dentition. Twenty volunteers participated in this study (10 males and 10 females; mean age, 26.6 +/- A 2.9 years). To simulate the bite force during occlusal tapping, a force-loading device was designed to exert impulsive force to the occlusal surface in the direction parallel to the tooth axis. The impulsive force detection threshold of the periodontal sensation was measured before and after loading 98 N of occlusal force on the left upper first molar for 1 min. Transient mechanical loading of the upper first molar caused an increase in the absolute threshold for impulsive force. This increase did not vanish immediately, and the increment of the threshold was maintained during the remainder of the experiment. A computer-controlled method for the evaluation of tooth tactile sensation using impulsive stimulation was established. Transient occlusal force loading parallel to the tooth axis increases the threshold of periodontal sensation for mechanical impulsive stimulation.

    DOI: 10.1007/s10266-012-0072-3

    Web of Science

    researchmap

  • 咬合違和感患者の治療予後に関する要因の多施設調査

    澁谷 智明, 玉置 勝司, 和気 裕之, 島田 淳, 葉山 莉香, 古谷野 潔, 鱒見 進一, 窪木 拓男, 皆木 省吾, 貞森 紳丞, 矢谷 博文, 藤澤 政紀, 杉崎 正志, 成田 紀之, 玉井 和樹, 原 節宏, 馬場 一美, 尾口 仁志, 金村 清孝, 山口 泰彦, 西川 洋二, 塚原 宏泰, 松香 芳三

    日本顎関節学会雑誌   25 ( Suppl. )   103 - 103   2013.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • 岡山大学におけるチーム基盤型学習(TBL)による有床義歯補綴学講義の評価

    原哲也, 兒玉直紀, 皆木省吾

    日本歯科医学教育学会総会・学術大会プログラム・抄録集   32nd   110 - 110   2013.7

     More details

    Language:Japanese   Publisher:日本歯科医学教育学会  

    J-GLOBAL

    researchmap

  • Effect of transient occlusal loading on the threshold of tooth tactile sensation perception for tapping like the impulsive stimulation

    Yuta Morimoto, Kazuhiro Oki, Sachiyo Iida, Chieko Shirahige, Naoto Maeda, Shigehisa Kawakami, Tadashi Matsunaga, Shogo Minagi

    ODONTOLOGY   101 ( 2 )   199 - 203   2013.7

     More details

    Language:English   Publisher:SPRINGER  

    The objectives of this study were (1) to establish a reliable method for detecting the force threshold of the tooth tactile sensation while avoiding experimenter bias and (2) to examine the effect of occlusal force loading on the threshold for impulsive force stimulation in subjects with normal dentition. Twenty volunteers participated in this study (10 males and 10 females; mean age, 26.6 +/- A 2.9 years). To simulate the bite force during occlusal tapping, a force-loading device was designed to exert impulsive force to the occlusal surface in the direction parallel to the tooth axis. The impulsive force detection threshold of the periodontal sensation was measured before and after loading 98 N of occlusal force on the left upper first molar for 1 min. Transient mechanical loading of the upper first molar caused an increase in the absolute threshold for impulsive force. This increase did not vanish immediately, and the increment of the threshold was maintained during the remainder of the experiment. A computer-controlled method for the evaluation of tooth tactile sensation using impulsive stimulation was established. Transient occlusal force loading parallel to the tooth axis increases the threshold of periodontal sensation for mechanical impulsive stimulation.

    DOI: 10.1007/s10266-012-0072-3

    Web of Science

    researchmap

  • A Case of Complete Dentures using a New Method of Examining the Maxillomandibular Residual Ridge Relationship (Occlusal Map) -New Method of Artificial Teeth Arrangement with Emphasis on Establishing Unilateral Balance during Masticatory Movement-

    岡本信, 前田直人, 山本美恵, 鵜川由紀子, 洲脇道弘, 沖和広, 西川悟郎, 皆木省吾

    日本補綴歯科学会誌   5 ( 3 )   300-308 (J-STAGE) - 308   2013.7

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    症例の概要:顎堤の対向関係に起因する問題を有した上下無歯顎患者に対して全部床義歯によって機能回復を行った症例を示す。また、片側性咬合平衡の確立に主眼を置いた新しい人工歯排列法を合わせて紹介する。まず咬合採得時に、咬合床を用いて片側性咬合平衡が得られる領域の記録を行った。対向関係の検査として、模型の規格撮影を行い、オクルーザルマップを作製した。オクルーザルマップ上の片側性咬合平衡が得られる領域の中で、上下顎が重なる部分に咬合接触が得られるように、臼歯部の人工歯排列を行った。完成義歯では、咀嚼時の安定が保たれ、咀嚼能力の向上が認められた。考察:オクルーザルマップによって、症例の問題点を正確に診断することができ、診断に基づいた治療の結果、良好な結果をもたらしたと考えられる。また、オクルーザルマップは人工歯排列位置の方針決定に際して非常に有用であった。今回用いた片側性咬合平衡の確立に主眼を置いた人工歯排列法は、咀嚼時における義歯の安定を獲得するために、効果的な方法であった。結論:オクルーザルマップと片側性咬合平衡の確立に主眼を置いた人工歯排列法によって、難症例においても咀嚼時における義歯の安定が得られ、患者のQOL向上に貢献することができた。本報告に用いた検査方法と人工歯排列方法は補綴臨床的に有意義な手法であると考えられた。(著者抄録)

    DOI: 10.2186/ajps.5.300

    J-GLOBAL

    researchmap

  • 構音障害および嚥下障害を有する上顎欠損症例に対するリハビリテーションのための3種類の補綴装置の比較

    矢野実郎, 熊倉勇美, 神桂二, 皆木省吾

    顎顔面補綴   36 ( 1 )   39 - 45   2013.6

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    症例は58歳男性で、再発硬口蓋癌に対する摘出術後に摂食・嚥下障害、器質性構音障害、開鼻音、開口障害を呈し、耳鼻咽喉科からリハビリテーション科に紹介された。言語聴覚士による嚥下訓練、口腔顔面運動訓練、構音訓練を実施し、歯科医師が作製した暫間義歯を使用して全栄養量摂取可能となり、発話明瞭度は4から3に改善して退院となった。しかし食事中に鼻腔へ食物が逆流するなどの訴えがあり、歯科補綴科で栓塞子と鼻孔弁(NSV)が処方された。これら3種類の補綴装置の機能を評価したところ、栓塞子は共鳴、構音、嚥下機能において最も良好であったが、装着しにくいため使用頻度は少なかった。暫間義歯は塞栓子よりも嚥下機能の装着効果が少なかったが、使い慣れており、患側の咬合も得られたため自宅での食事で使用されていた。NSVは栓塞子に比べ構音機能の改善は小さかったが、装着が簡便で違和感が少なく、長時間装着が可能で使用頻度は多かった。

    J-GLOBAL

    researchmap

  • 一剤式適合試験材を用いた義歯適合性の定量的診査方法の開発

    原 哲也, 佐名川 徹, 森 慎吾, 白井 肇, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   24回   186 - 186   2013.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • ワールドカフェを用いた歯学部1年生の高齢者歯科に関する意識調査(第2報) 2011年度と2012年度の比較

    兒玉 直紀, 飯田 祥与, 前田 直人, 宮崎 貴子, 美甘 真, 川上 滋央, 西川 悟郎, 原 哲也, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   24回   197 - 197   2013.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 既製Nasal Speaking Valveを用いた構音改善効果に関するアンケート調査

    美甘 真, 兒玉 直紀, 前田 直人, 川上 滋央, 沖 和広, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   24回   122 - 122   2013.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • New theoretical model to measure pressure produced during impression procedure for complete dentures - Visual inspection of impression material flow

    G. Nishigawa, Y. Maruo, M. Irie, M. Oka, Y. Tamada, S. Minagi

    Dental Materials   29 ( 5 )   530 - 534   2013.5

     More details

    Language:English  

    Objective: A theoretical model, based on fluid dynamics, was developed to measure impression pressure. The purpose of this study was to evaluate the validity of this theoretical model by comparing its theoretical analysis against actual pressure measurements conducted using an impression tray and edentulous oral mucosa analog embedded with pressure sensors. Methods: In the theoretical model, a hollow tube was mounted onto an impression tray by penetrating through the tray. When force was applied to the tray, pressure was produced which then caused the impression material to flow into the hollow tube. Length of impression material which flowed into tube was denoted as l. In the calculation formula for theoretical model, pressure impulse I was expressed as a function of impression flow length l. For actual pressure measurements, four electric pressure sensors were embedded in an experimental edentulous arch. To visually observe and measure length of impression material flow, four transparent silicon tubes were mounted vertically at different positions on tray. During tray seating, impression material flowed into tubes and pressure which caused material flow movement was measured by the embedded sensor at each tube's position. Results: Based on actual pressure measurements under one experimental condition, regression analysis of pressure data acquired from electric sensors yielded the formula, Y = 0.056X2 + 0.124X. Based on theoretical analysis using a particular viscosity value, the numerical formula yielded was Y = 0.057X2, which resembled that of the regression formula. Significance: Theoretical model presented in this paper augured well for clinical application as an easy and economical means to examine magnitude and distribution of impression pressure by measuring lengths of impression material flow in tubes fixed to impression tray. © 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2013.02.005

    Scopus

    PubMed

    researchmap

  • 実験動作に伴う自律神経活動の時系列変化と歯根膜感覚閾値との関連についての研究

    沖 和広, 平田 敦俊, 熊崎 洋平, 川上 滋央, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   302 - 302   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • ラット歯肉線維芽細胞に対する周期的圧縮刺激が破骨細胞の分化に及ぼす影響

    荒木 大介, 原 哲也, 飯田 祥与, 岡 森彦, 伊志嶺 知沙, 黒住 明正, 坂本 隼一, 宮崎 貴子, 皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   199 - 199   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 二ケイ酸リチウムガラスセラミックスとレジンセメントの接着強さに対する表面処理効果

    丸尾 幸憲, 入江 正郎, 西川 悟郎, 玉田 宜之, 前田 直人, 山本 美恵, 皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   203 - 203   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 全部床義歯における片側性咬合平衡の得られる領域に関する形態計測的分析

    岡本 信, 前田 直人, 山本 美恵, 鵜川 由紀子, 洲脇 道弘, 守屋 佳典, 角谷 真一, 中島 啓一朗, 松永 匡司, 沖 和広, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   174 - 174   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 病態から考える欠損歯列のリスク 発生する力の評価診断プロセスを日常臨床へ

    皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   85 - 85   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 咬合支持の回復による海馬の記憶関連遺伝子に関する分子生物的解析

    飯田 祥与, 原 哲也, 荒木 大介, 岡 森彦, 伊志嶺 知沙, 黒住 明正, 坂本 隼一, 宮崎 貴子, 皆木 省吾

    日本補綴歯科学会誌   5 ( 特別号 )   153 - 153   2013.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • New theoretical model to measure pressure produced during impression procedure for complete dentures - Visual inspection of impression material flow

    G. Nishigawa, Y. Maruo, M. Irie, M. Oka, Y. Tamada, S. Minagi

    Dental Materials   29 ( 5 )   530 - 534   2013.5

     More details

    Language:English  

    Objective: A theoretical model, based on fluid dynamics, was developed to measure impression pressure. The purpose of this study was to evaluate the validity of this theoretical model by comparing its theoretical analysis against actual pressure measurements conducted using an impression tray and edentulous oral mucosa analog embedded with pressure sensors. Methods: In the theoretical model, a hollow tube was mounted onto an impression tray by penetrating through the tray. When force was applied to the tray, pressure was produced which then caused the impression material to flow into the hollow tube. Length of impression material which flowed into tube was denoted as l. In the calculation formula for theoretical model, pressure impulse I was expressed as a function of impression flow length l. For actual pressure measurements, four electric pressure sensors were embedded in an experimental edentulous arch. To visually observe and measure length of impression material flow, four transparent silicon tubes were mounted vertically at different positions on tray. During tray seating, impression material flowed into tubes and pressure which caused material flow movement was measured by the embedded sensor at each tube's position. Results: Based on actual pressure measurements under one experimental condition, regression analysis of pressure data acquired from electric sensors yielded the formula, Y = 0.056X2 + 0.124X. Based on theoretical analysis using a particular viscosity value, the numerical formula yielded was Y = 0.057X2, which resembled that of the regression formula. Significance: Theoretical model presented in this paper augured well for clinical application as an easy and economical means to examine magnitude and distribution of impression pressure by measuring lengths of impression material flow in tubes fixed to impression tray. © 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2013.02.005

    Scopus

    PubMed

    researchmap

  • 図解で学ぶ!日常臨床に役立つQ&A "加齢と味覚"の真実(第4回)(最終回) 咀嚼と唾液について

    前田 直人, 兒玉 直紀, 皆木 省吾, 松尾 龍二

    The Quintessence   32 ( 4 )   0758 - 0761   2013.4

     More details

    Language:Japanese   Publisher:クインテッセンス出版(株)  

    researchmap

  • 咬合異常感(違和感)の発症因子に関する多施設実態調査

    澁谷 智明, 玉置 勝司, 和気 裕之, 島田 淳, 古谷野 潔, 鱒見 進一, 窪木 拓男, 皆木 省吾, 貞森 紳丞, 矢谷 博文, 藤澤 政紀, 杉崎 正志, 成田 紀之, 原 節宏, 馬場 一美, 尾口 仁志, 金村 清孝, 山口 泰彦, 西川 洋二, 塚原 宏泰

    日本補綴歯科学会誌   5 ( 2 )   E169 - E169   2013.4

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 図解で学ぶ!日常臨床に役立つQ&A "加齢と味覚"の真実(第3回) 口蓋感覚と義歯について

    川上 滋央, 兒玉 直紀, 皆木 省吾, 松尾 龍二

    The Quintessence   32 ( 3 )   0510 - 0513   2013.3

     More details

    Language:Japanese   Publisher:クインテッセンス出版(株)  

    researchmap

  • 二ケイ酸リチウムガラスセラミックスの接着強さにシランカップリング剤分子中の加水分解基数が及ぼす影響

    西川 悟郎, 入江 正郎, 丸尾 幸憲, 山本 美恵, 玉田 宜之, 前田 直人, 長岡 紀幸, 松本 卓也, 皆木 省吾

    日本歯科理工学会誌   32 ( 2 )   154 - 154   2013.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 咬合調整時の使用を目的とした歯面吸着型咬合音検出装置の開発

    沖 和広, 熊崎 洋平, 八木 くるみ, 脇元 修一, 山本 陽太, 鈴森 康一, 皆木 省吾

    日本医用歯科機器学会誌   18 ( 1 )   25 - 27   2013.3

     More details

    Language:Japanese   Publisher:日本医用歯科機器学会  

    researchmap

  • ロカテック処理したジルコニア表面の断面TEM観察

    玉田 宜之, 長岡 紀幸, 武田 宏明, 吉原 久美子, 入江 正郎, 西川 悟郎, 丸尾 幸憲, 吉田 靖弘, 鳥井 康弘, 松本 卓也, 皆木 省吾

    日本歯科理工学会誌   32 ( 2 )   152 - 152   2013.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 顎関節症所見と歯根膜感覚閾値との相関に関する研究

    平田 敦俊, 森本 雄太, 兒玉 直紀, 沖 和広, 小笠原 直子, 福池 知穂, 熊崎 洋平, 潘 秋月, 皆木 省吾

    日本顎口腔機能学会雑誌   19 ( 2 )   182 - 183   2013.2

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • 図解で学ぶ!日常臨床に役立つQ&A "加齢と味覚"の真実(第2回) 義歯と味覚について

    兒玉 直紀, 皆木 省吾, 松尾 龍二

    The Quintessence   32 ( 2 )   0288 - 0291   2013.2

     More details

    Language:Japanese   Publisher:クインテッセンス出版(株)  

    researchmap

  • 一剤式診査ペーストを用いた義歯床の定量的適合診査に関する研究

    佐名川 徹, 原 哲也, 皆木 省吾

    日本補綴歯科学会誌   5 ( 1 )   E110 - E110   2013.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • New Method of Examination for Maxillomandibular Residual Ridge Relationship in Prosthodontic Treatment using Digital Image Processing

    岡本信, 皆木省吾

    日本補綴歯科学会誌   5 ( 1 )   65-71 (J-STAGE) - 71   2013.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    目的:欠損補綴治療において、上下顎の対向関係は非常に重要な情報といえる。しかしながら臨床の場において、その検査方法としては、咬合器装着された模型を後方や側方から観察して判断する方法が一般的であり、科学的な検査法は認められないのが現状である。そこで、規格撮影を行った上下顎模型をデジタル画像処理することによって、上下顎の対向関係を簡便に検査する方法を考案した。材料と方法:規格撮影を行うための指標となるインジケーターを作製する。インジケーターを用いて上下顎模型の画像を規格撮影し、Adobe Photoshopなどの画像処理ソフトに入力する。画像処理ソフト上で上下顎画像の重ね合わせを行うことにより、対向関係を正確に再現した画像(オクルーザルマップ)が得られる。考察:本法から得られるオクルーザルマップは、仮想咬合平面に垂直な方向からの対向関係を画像として再現することができ、非常に有用な情報といえる。また、オクルーザルマップを用いて欠損補綴治療計画の立案、人工歯排列のシミュレーションおよび技工サイドへの情報提供などを行うことも可能である。結論:本検査法によって、上下顎の対向関係を、臨床の場において科学的に解析することが可能となった。本検査法から得られるオクルーザルマップは、多くの歯科医師、歯科技工士にとって、欠損補綴治療計画の立案の際や人工歯排列時の基準として有用な情報となる。(著者抄録)

    DOI: 10.2186/ajps.5.65

    CiNii Article

    J-GLOBAL

    researchmap

  • OHIP日本語版を用いた補綴治療患者の口腔関連QOL評価における最小重要差の検討

    大野 彩, 木村, 窪木 拓男, 市川 哲雄, 秀島 雅之, 佐藤 裕二, 玉置 勝司, 赤川 安正, 永尾 寛, 櫻井 薫, 馬場 一美, 皆木 省吾, 鱒見 進一, 佐藤 博信, 澤瀬 隆, 西 恭宏, 和気 裕之, 大山 喬史, 平井 敏博, 佐々木 啓一

    日本補綴歯科学会誌   5 ( 1 )   E113 - E113   2013.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 図解で学ぶ!日常臨床に役立つQ&A "加齢と味覚"の真実(第1回) 加齢と味覚について(総論)

    美甘 真, 兒玉 直紀, 皆木 省吾, 松尾 龍二

    The Quintessence   32 ( 1 )   0056 - 0059   2013.1

     More details

    Language:Japanese   Publisher:クインテッセンス出版(株)  

    researchmap

  • 咀嚼能率の向上を目的とした人工歯咬合面形態の検討

    小笠原 直子, 杉本 恭子, 福池 知穂, 平田 敦俊, 皆木 省吾

    日本補綴歯科学会誌   5 ( 1 )   E108 - E108   2013.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 表情筋の影響を考慮した高精度携帯型筋電計の表面電極貼付部位探索研究

    川上滋央, 熊崎洋平, 美甘真, 平田敦俊, 沖和広, 皆木省吾

    日本咀嚼学会学術大会プログラム・抄録集   24th   70 - 71   2013

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 食事や会話を含む日常生活中の嚥下音を自動判別できるシステムの確立

    福池知穂, 兒玉直紀, 萬田陽介, 杉本恭子, 橋本有希, 皆木省吾

    日本摂食嚥下リハビリテーション学会学術大会抄録集(Web)   19th   SO1-4-3-2 (WEB ONLY)   2013

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 舌圧と咽頭内圧の同時測定―食塊量・粘度の影響―

    矢野実郎, 矢野実郎, 青柳陽一郎, 熊倉勇美, 熊倉勇美, 椿原彰夫, 皆木省吾, 堀一浩, 藤原茂弘, 小野高裕

    日本摂食嚥下リハビリテーション学会学術大会抄録集(Web)   19th   SO1-8-2-5 (WEB ONLY)   2013

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 咀嚼能力を日常の複数食材の混合咀嚼物から簡便に客観評価・診断する食塊粒度解析システムの開発

    杉本恭子, 橋本有希, 福池知穂, 兒玉直紀, 山本美恵, 潘秋月, 森山毅, 近藤良平, 皆木省吾

    日本摂食嚥下リハビリテーション学会学術大会抄録集(Web)   19th   SO1-4-2-4 (WEB ONLY)   2013

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • 痛みのない人工歯を目指した人工歯咬合面形態の検討

    小笠原直子, 杉本恭子, 福池知穂, 平田敦俊, 皆木省吾

    岡山歯学会雑誌   31 ( 2 )   100 - 100   2012.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    J-GLOBAL

    researchmap

  • 硬口蓋癌術後に3種類の補綴装置を作成・装用した一症例

    矢野実郎, 熊倉勇美, 神桂二, 皆木省吾

    顎顔面補綴   35 ( 2 )   114 - 114   2012.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    J-GLOBAL

    researchmap

  • HEMA Inhibits Interfacial Nano-layering of the Functional Monomer MDP

    Y. Yoshida, K. Yoshihara, S. Hayakawa, N. Nagaoka, T. Okihara, T. Matsumoto, S. Minagi, A. Osaka, K. Van Landuyt, B. Van Meerbeek

    JOURNAL OF DENTAL RESEARCH   91 ( 11 )   1060 - 1065   2012.11

     More details

    Language:English   Publisher:SAGE PUBLICATIONS INC  

    Previous research showed that the functional monomer 10-methacryloxydecyl dihydrogen phosphate (MDP) ionically bonds to hydroxyapatite (HAp) and forms a nano-layered structure at the interface with HAp-based substrates. Such hydrophobic nano-layering is considered to contribute to the long-term durability of the bond to tooth tissue. However, dental adhesives are complex mixtures usually containing different monomers. This study investigated the effect of the monomer 2-hydroxyethylmethacrylate (HEMA) on the chemical interaction of MDP with HAp by x-ray diffraction (XRD), nuclear magnetic resonance (NMR), and quartz crystal microbalance (QCM). We examined the chemical interaction of 5 experimental MDP solutions with increasing concentrations of HEMA. XRD revealed that addition of HEMA inhibits nano-layering at the interface, while NMR confirmed that MDP remained adsorbed onto the HAp surface. QCM confirmed this adsorption of MDP to HAp, as well as revealed that the demineralization rate of HAp by MDP was reduced by HEMA. It was concluded that even though the adsorption of MDP to HAp was not hindered, addition of HEMA inhibited interfacial nano-layering. Potential consequences with regard to bond durability necessitate further research.

    DOI: 10.1177/0022034512460396

    Web of Science

    researchmap

  • Denture Treatment and Assessment in Relation to Cognitive Functions and Activity of Daily Living in Elderly Inpatients: A Preliminary Study

    Maeda Naoto, Sakamoto Shunichi, Kodama Naoki, Oki Kazuhiro, Shibata Toyofumi, Soga Keiko, Shirahige Tomoko, Nishikawa Goro, Minagi Shogo

    Annals of Japan Prosthodontic Society   4 ( 4 )   419 - 426   2012.10

     More details

    Language:Japanese   Publisher:公益社団法人 日本補綴歯科学会  

    &lt;b&gt;Purpose:&lt;/b&gt; It is not very rare for institutionalized elderly patients to be unable to adapt to a newly constructed denture prosthesis, especially those who have cognitive disorders or are bedridden. This study investigated the effect of the timing of prosthodontic intervention and cognitive disorders on the rate of denture prosthesis usage.&lt;br&gt;&lt;b&gt;Methods:&lt;/b&gt; Fifty-three subjects were selected from institutionalized edentulous elderly in a long-term care geriatric hospital in Kurashiki, Okayama, Japan. For each of these subjects, data on denture treatment after admission to the hospital, usage of the denture, cognitive function, and independence in activities of daily living were collected and analyzed.&lt;br&gt;&lt;b&gt;Results:&lt;/b&gt; Among bedridden patients, the usage rate of persons who received dentures after hospitalization was 65.6%, whereas all who received dentures before hospitalization continued to use the dentures during hospitalization. Among patients with cognitive disorders, the usage rate among persons who received dentures before hospitalization was 83.3%, but among those who received dentures after hospitalization it was 22.2%.&lt;br&gt;&lt;b&gt;Conclusion:&lt;/b&gt; It was suggested that when a person with usable dentures becomes bedridden, many would continue to use them even after becoming bedridden and/or afflicted with dementia. Furthermore, dentists must carefully examine the timing of denture treatment for the elderly, especially for patients with dementia and those who are bedridden and/or with dementia.

    CiNii Article

    researchmap

  • The Effect of Volitional Suppression of Swallowing on Tongue Pressure during Mastication

    Kondoh Jugo, Qiang Li, Ono Takahiro, Yamamoto Masaaki, Sugimoto Kyoko, Oki Kazuhiro, Minagi Shogo, Maeda Yoshinobu, Nokubi Takashi

    The Journal of Japanese Society of Stomatognathic Function   19 ( 1 )   54 - 55   2012.10

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    CiNii Article

    researchmap

  • 二官能メタクリレートの添加が即時重合レジンの曲げ特性に与える影響

    山本 美恵, 丸尾 幸憲, 入江 正郎, 西川 悟郎, 玉田 宜之, 松本 卓也, 皆木 省吾

    日本歯科理工学会誌   31 ( 5 )   452 - 452   2012.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • ワールドカフェを用いた歯学部1年生の高齢者歯科に関する意識調査

    兒玉 直紀, 宮崎 貴子, 前田 直人, 美甘 真, 荒木 大介, 坂本 隼一, 西川 悟郎, 原 哲也, 皆木 省吾

    老年歯科医学   27 ( 2 )   160 - 161   2012.9

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • ラット大脳皮質の電気刺激で誘発されるリズミカルな顎運動と唾液分泌の関連

    前田 直人, 兒玉 直紀, 美甘 真, 美藤 純弘, 小橋 基, 皆木 省吾, 松尾 龍二

    Journal of Oral Biosciences Supplement   2012   113 - 113   2012.9

     More details

    Language:Japanese   Publisher:(一社)歯科基礎医学会  

    researchmap

  • 即時重合レジンの重合収縮の計測方法に関する研究

    丸尾 幸憲, 山本 美恵, 入江 正郎, 西川 悟郎, 玉田 宜之, 松本 卓也, 皆木 省吾

    日本歯科理工学会誌   31 ( 5 )   458 - 458   2012.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • ジルコニアに対するリン酸モノマーの吸着特性

    玉田 宜之, 長岡 紀幸, 早川 聡, 入江 正郎, 西川 悟郎, 丸尾 幸憲, 吉田 靖弘, 松本 卓也, 尾坂 明義, 皆木 省吾

    日本歯科理工学会誌   31 ( 5 )   479 - 479   2012.9

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • 咬合異常感(違和感)の発症因子に関する多施設による実態調査の結果報告

    玉置 勝司, 古谷野 潔, 鱒見 進一, 窪木 拓男, 皆木 省吾, 貞森 紳丞, 矢谷 博文, 藤澤 政紀, 杉崎 正志, 成田 紀之, 原 節宏, 馬場 一美, 尾口 仁志, 金村 清孝, 山口 泰彦, 西川 洋二, 塚原 宏泰

    日本歯科医師会雑誌   65 ( 5 )   636 - 636   2012.8

     More details

    Language:Japanese   Publisher:(公社)日本歯科医師会  

    researchmap

  • スプリントの作り方、使い方

    鱒見 進一, 皆木 省吾

    日本顎関節学会雑誌   24 ( Suppl. )   76 - 76   2012.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • 岡山大学におけるチーム基盤型学習(TBL)による歯科補綴学講義の試行

    原 哲也, 皆木 省吾, 兒玉 直紀, 吉田 登志子, 白嶋 章

    日本歯科医学教育学会総会・学術大会プログラム・抄録集   31回   133 - 133   2012.7

     More details

    Language:Japanese   Publisher:日本歯科医学教育学会  

    researchmap

  • 岡山大学病院の歯科医師卒後臨床研修前後における補綴臨床経験に関するアンケート調査

    兒玉 直紀, 洲脇 道弘, 西川 悟郎, 原 哲也, 皆木 省吾

    日本歯科医学教育学会総会・学術大会プログラム・抄録集   31回   145 - 145   2012.7

     More details

    Language:Japanese   Publisher:日本歯科医学教育学会  

    researchmap

  • 外傷による下顎骨整復処置後に咬合不全を認めた2症例

    兒玉 直紀, 川上 滋央, 皆木 省吾

    日本顎関節学会雑誌   24 ( Suppl. )   119 - 119   2012.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • 音声除外センサ併用下の高感度筋電図は顎関節症治療法選択基準の一つとなり得る

    熊崎 洋平, 内藤 万弥, 川上 滋央, 沖 和広, 皆木 省吾

    日本顎関節学会雑誌   24 ( Suppl. )   164 - 164   2012.7

     More details

    Language:Japanese   Publisher:(一社)日本顎関節学会  

    researchmap

  • 咬合調整時の使用を目的とした歯面吸着型咬合音検出装置の開発

    沖 和広, 熊崎 洋平, 八木 くるみ, 脇元 修一, 山本 陽太, 鈴森 康一, 皆木 省吾

    日本医用歯科機器学会誌   17 ( 2 )   24 - 24   2012.7

     More details

    Language:Japanese   Publisher:日本医用歯科機器学会  

    researchmap

  • New image analysis of large food particles can discriminate experimentally suppressed mastication

    K. Sugimoto, C. M. Iegami, S. Iida, M. Naito, R. Tamaki, S. Minagi

    JOURNAL OF ORAL REHABILITATION   39 ( 6 )   405 - 410   2012.6

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Objective parameters that could provide a basis for food texture selection for elderly or dysphagic patients have not been established. We, therefore, aimed to develop a precise method of measuring large particles (&gt;2 mm in diameter) in a bolus and an analytical method to provide a scientific rationale for food selection under masticatory dysfunction conditions. We developed a new illumination system to evaluate the ability of twenty female participants (mean age, 23.4 +/- 4.3 years) to masticate carrots, peanuts and beef with full, half and one quarter of the number of masticatory strokes. We also evaluated mastication under suppressed force, regulated by 20% electromyographic of the masseter muscle. The intercept and inclination of the regression line for the distribution of large particles were adopted as coefficients for the discrimination of masticatory efficiency. Single set of coefficient thresholds of 0.10 for the intercept and 1.62 for the inclination showed excellent discrimination of masticatory conditions for all three test foods with high specificity and sensitivity. These results suggested that our method of analysing the distribution of particles &gt;2 mm in diameter might provide the basis for the appropriate selection of food texture for masticatory dysfunction patients from the standpoint of comminution.

    DOI: 10.1111/j.1365-2842.2012.02288.x

    Web of Science

    researchmap

  • Measurement of Denture Base Size to Provide Standard Width for Occluso-Swallow Prosthesis and Masticato-Swallow Prosthesis:―Proposition of the Standard Size of Lower Complete Denture Base for the Occlusal and Masticatory Functional Rehabilitation―

    Minagi Shogo, Shibata Toyofumi, Maeda Naoto, Sakamoto Shun-ichi, Soga Keiko, Kodama Naoki, Nishigawa Goro

    Ronen Shika Igaku   27 ( 1 )   3 - 9   2012.6

     More details

    Language:Japanese   Publisher:一般社団法人 日本老年歯科医学会  

    This study aimed to provide the actual size of the denture base which would be stable under functional movement of the cheek, lip and tongue. The subjects were 28 edentulous subjects, who visited Okayama University Hospital, Division of Occlusion and Removable Prosthodontics or were admitted in Shibata Hospital (11 men and 17 women, mean age 82.4±7.4 years). The mandibular base plate was adjusted for each subject to be stable during forceful touching the incisive papilla by the tongue tip, forceful lip pursing and maximal jaw opening. The length of the buccal and lingual flange of the base plate was measured as the distance between the top of the alveolar crest and edge of the flange at 1) median point, 2) buccal frenum point, and 3) molar point which was defined as the mid point between the frenum point and the retromolar pad. The mean bucco-lingual (Labio-lingual) widths of the base plate were 8.4 mm at the median point, 10.2 mm at the buccal frenum point, and 13.7 mm at the molar point for male subjects. The widths for female subjects were 8.8 mm, 11.0 mm, and 14.7 mm, respectively. No significant difference could be observed for the mean values between male and female subjects.

    CiNii Article

    researchmap

  • 撃力を利用した歯根膜感覚計測

    森本 雄太, 沖 和広, 内藤 万弥, 白髭 智子, 松永 匡司, 皆木 省吾

    岡山歯学会雑誌   31 ( 1 )   38 - 38   2012.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • ワールドカフェを用いた歯学部1年生の高齢者歯科に関する意識調査

    兒玉 直紀, 宮崎 貴子, 前田 直人, 美甘 真, 荒木 大介, 坂本 隼一, 西川 悟郎, 原 哲也, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   23回   107 - 107   2012.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 抗血栓療法継続下での抜歯における止血状態

    豊田 眞仁, 皆木 省吾

    老年歯科医学   27 ( 1 )   25 - 29   2012.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    本研究では、抗血栓療法患者に対して抗血栓薬内服継続下で抜歯を行った際の止血状態を調査した。対象は平成21年4月から平成22年12月までに笠岡第一病院歯科を受診した患者41名(抗凝固療法単独15名、抗凝固療法と抗血小板療法の併用7名、抗血小板療法単独19名)とし、合計94回、157本の抜歯を行い、後出血の件数を調査した。抜歯直前に測定したPT-INR値は1.0〜1.49が7件、1.5〜1.99が18件、2.0〜2.49が8件、2.5〜2.99が5件であった。3.0以上は認めなかった。すべての抜歯において内服の減量および中止は行わず、抜歯窩へのゼラチンスポンジの挿入、縫合および圧迫止血を行った。全抜歯94件のうち、抗凝固療法単独症例で1件、抗凝固療法と抗血小板療法の併用症例で1件の計2件において後出血を認めた。抗血小板療法単独症例での後出血は認めなかった。いずれも圧迫止血および止血用シーネの使用により30分程度で止血可能であった。抗血栓薬の中止により、死亡例を含む血栓塞栓症のリスクが高まることが示されており、平成22年に歯科では初めてとなる「抗血栓療法患者の抜歯に関するガイドライン」が作成され、血栓薬内服継続下での抜歯が推奨された。本研究の抜歯手技はそれに準じているが、抜歯後出血の割合はごくわずかで、起こった場合でも容易にかつ短時間で止血可能であったことから、ガイドラインにのっとり、抗血栓薬内服継続下での抜歯が可能であることが示唆された。(著者抄録)

    researchmap

  • New image analysis of large food particles can discriminate experimentally suppressed mastication

    K. Sugimoto, C. M. Iegami, S. Iida, M. Naito, R. Tamaki, S. Minagi

    JOURNAL OF ORAL REHABILITATION   39 ( 6 )   405 - 410   2012.6

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    Objective parameters that could provide a basis for food texture selection for elderly or dysphagic patients have not been established. We, therefore, aimed to develop a precise method of measuring large particles (&gt;2 mm in diameter) in a bolus and an analytical method to provide a scientific rationale for food selection under masticatory dysfunction conditions. We developed a new illumination system to evaluate the ability of twenty female participants (mean age, 23.4 +/- 4.3 years) to masticate carrots, peanuts and beef with full, half and one quarter of the number of masticatory strokes. We also evaluated mastication under suppressed force, regulated by 20% electromyographic of the masseter muscle. The intercept and inclination of the regression line for the distribution of large particles were adopted as coefficients for the discrimination of masticatory efficiency. Single set of coefficient thresholds of 0.10 for the intercept and 1.62 for the inclination showed excellent discrimination of masticatory conditions for all three test foods with high specificity and sensitivity. These results suggested that our method of analysing the distribution of particles &gt;2 mm in diameter might provide the basis for the appropriate selection of food texture for masticatory dysfunction patients from the standpoint of comminution.

    DOI: 10.1111/j.1365-2842.2012.02288.x

    Web of Science

    researchmap

  • 吸盤デバイスを用いた咬合音聴診システムの開発

    八木くるみ, 脇元修一, 鈴森康一, 山本陽太, 熊崎洋平, 沖和広, 皆木省吾

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM)   2012   ROMBUNNO.1P1-M04   2012.5

     More details

    Language:Japanese  

    J-GLOBAL

    researchmap

  • Dynamics of posterior tongue during pronunciation and voluntary tongue lift movement in young adults

    C. Shirahige, K. Oki, Y. Morimoto, N. Oisaka, S. Minagi

    JOURNAL OF ORAL REHABILITATION   39 ( 5 )   370 - 376   2012.5

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    The lifting-up movement of the posterior part of the tongue to touch the palate, which is a requirement for performing physiological functions such as deglutition and speech, is an important phenomenon that is difficult to objectively evaluate. The purpose of this study was to develop a new modality to evaluate the tongue-lifting function, especially in the posterior part of the tongue, and to elucidate the dynamic properties of the tongue in normal subjects. Twenty-three healthy volunteers (9 men and 14 women; mean age, 27.6 years) participated in this study. A new device was developed that could evaluate the up-down movement of the posterior part of the tongue in a non-invasive manner. The experimental tasks were as follows: (i) /a/ pronunciation for 1 s followed by /ka/ pronunciation (a-ka task), (ii) /a/ pronunciation for 1 s followed by /ga/ pronunciation (a-ga task) and (iii) /a/ pronunciation for 1 s followed by a voluntary push-up movement of the posterior part of the tongue (a-lift task). Maximum upward velocity in the a-ga task was larger than that in the a-ka task (P &lt; 0.05). The a-lift task showed the highest tongue lift range among the three tasks, and the a-ga task showed a higher range than that of the a-ka task (P &lt; 0.05). This study revealed that precise quantification of the motility of the posterior part of the tongue, which would be useful in rehabilitation of articulation and/or swallowing, could be achieved using this new device in a non-invasive manner.

    DOI: 10.1111/j.1365-2842.2011.02283.x

    Web of Science

    researchmap

  • 音声センサを用いた発話時間の識別 日中咀嚼筋EMG記録からの発話時識別のために

    熊崎 洋平, 内藤 万弥, 川上 滋央, 沖 和広, 岡 森彦, 前田 直人, 美甘 真, 宮崎 貴子, 山本 美恵, 皆木 省吾

    日本補綴歯科学会誌   4 ( 特別号 )   268 - 268   2012.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 新たに開発した携帯型高精度筋電計による健常成人の睡眠時咬筋筋活動様相の検討

    内藤 万弥, 荒木 大介, 飯田 祥与, 熊崎 洋平, 杉本 恭子, 美甘 真, 宮崎 貴子, 山本 美恵, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   4 ( 特別号 )   214 - 214   2012.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • PMMA/アジピン酸ジビニル系レジンの生体親和性

    原 哲也, 田仲 持郎, 岡 森彦, 黒田 知沙, 黒住 明正, 坂本 隼一, 荒木 大介, 飯田 祥与, 宮崎 貴子, 佐名川 徹, 皆木 省吾

    日本補綴歯科学会誌   4 ( 特別号 )   235 - 235   2012.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Dynamics of posterior tongue during pronunciation and voluntary tongue lift movement in young adults

    C. Shirahige, K. Oki, Y. Morimoto, N. Oisaka, S. Minagi

    JOURNAL OF ORAL REHABILITATION   39 ( 5 )   370 - 376   2012.5

     More details

    Language:English   Publisher:WILEY-BLACKWELL  

    The lifting-up movement of the posterior part of the tongue to touch the palate, which is a requirement for performing physiological functions such as deglutition and speech, is an important phenomenon that is difficult to objectively evaluate. The purpose of this study was to develop a new modality to evaluate the tongue-lifting function, especially in the posterior part of the tongue, and to elucidate the dynamic properties of the tongue in normal subjects. Twenty-three healthy volunteers (9 men and 14 women; mean age, 27.6 years) participated in this study. A new device was developed that could evaluate the up-down movement of the posterior part of the tongue in a non-invasive manner. The experimental tasks were as follows: (i) /a/ pronunciation for 1 s followed by /ka/ pronunciation (a-ka task), (ii) /a/ pronunciation for 1 s followed by /ga/ pronunciation (a-ga task) and (iii) /a/ pronunciation for 1 s followed by a voluntary push-up movement of the posterior part of the tongue (a-lift task). Maximum upward velocity in the a-ga task was larger than that in the a-ka task (P &lt; 0.05). The a-lift task showed the highest tongue lift range among the three tasks, and the a-ga task showed a higher range than that of the a-ka task (P &lt; 0.05). This study revealed that precise quantification of the motility of the posterior part of the tongue, which would be useful in rehabilitation of articulation and/or swallowing, could be achieved using this new device in a non-invasive manner.

    DOI: 10.1111/j.1365-2842.2011.02283.x

    Web of Science

    researchmap

  • ラット大脳皮質の電気刺激が誘発するリズミカルな顎運動と唾液分泌の関連

    前田 直人, 兒玉 直紀, 美甘 真, 丸尾 幸憲, 松尾 龍二, 皆木 省吾

    日本補綴歯科学会誌   4 ( 特別号 )   85 - 85   2012.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • ジルコニア表面のリン酸モノマーによる有機化の検討

    玉田 宜之, 長岡 紀幸, 早川 聡, 入江 正郎, 西川 悟郎, 丸尾 幸憲, 吉田 靖弘, 松本 卓也, 尾坂 明義, 皆木 省吾

    日本歯科理工学会誌   31 ( 2 )   190 - 190   2012.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    researchmap

  • Relationship between masticatory performance evaluation using gummy jelly and its particle distribution analysis

    Hashimoto Megumi, Hoshino Masanori, Mikamo Shin, Miyajima Ryuichiro, Qiang Li, Sasaki Keiichi, Oki Kazuhiro, Yamamoto Masaaki, Kondoh Jugo, Ono Takahiro, Nokubi Takashi, Sugimoto Kyoko, Minagi Shogo, Inada Emi, Kakudo Masaki, Jinno Yohei, Tanaka Yasue, Tanaka Muto, Nakamura Mayumi, Hayashi Akiko

    The Journal of Japanese Society of Stomatognathic Function   18 ( 2 )   194 - 195   2012.2

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    CiNii Article

    researchmap

  • Measuring masticatory performance by visual scoring, &beta;-carotene elution and particle analysis using Test gummy jelly

    Sugimoto Kyoko, Hoshino Masanori, Mikamo Shin, Miyajima Ryuichiro, Qiang Li, Sasaki Keiichi, Oki Kazuhiro, Yamamoto Masaaki, Kondoh Jugo, Ono Takahiro, Nokubi Takashi, Hashimoto Megumi, Minagi Shogo, Inada Emi, Kakudo Masaki, Jinno Yohei, Tanaka Yasue, Tanaka Muto, Nakamura Mayumi, Hayashi Akiko

    The Journal of Japanese Society of Stomatognathic Function   18 ( 2 )   125 - 131   2012.2

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    As mastication is a multivalent function, many modalities have been used for the evaluation of its efficiency. Regarding the methods utilizing gummy jelly as a test food, evaluation method for the elution of ingredient or comminution scoring method have been reported so far. However, the relationship between the comminuted particle analysis and the dissolution analysis has not been clarified yet. This study aimed to reveal the relationship between three masticatory efficiency evaluating methods, which are the amount of eluted &amp;beta;-carotene, visual score and particle distribution analysis, using standardized test gummy jelly. Seventeen healthy full dentate subjects (9 males, 8 females, mean age 30.8 &amp;plusmn; 6.9 years) participated in this study. Particle analysis was achieved using digital imaging method. The elution of &amp;beta;-carotene under standardized conditions to 35 degree temperature controlled water of was evaluated. Masticatory performance was also scored by visual inspection according to 10-stage rating scale. Significant correlation was observed between the score and the area of the largest particle in sample bolus (p&lt;0.001). Significant correlation between the elution sensor output and the relative rate of the total area of the particles, whose size were in the range of 1mm2 to 50mm2, to the total area of the whole bolus particles could also be observed (p&lt;0.001). From the results of this study, it was revealed that the dissolution of &amp;beta;-carotene from the test gummy jelly, visually scored masticatory performance and the particle distribution analysis provide satisfactory correlations.

    CiNii Article

    researchmap

  • Mechanomyographic activity in the human lateral pterygoid muscle during mandibular movement

    Shigehisa Kawakami, Naoki Kodama, Naoto Maeda, Shunichi Sakamoto, Kazuhiro Oki, Yoshinobu Yanagi, Jun-Ichi Asaumi, Teruta Maeda, Shogo Minagi

    JOURNAL OF NEUROSCIENCE METHODS   203 ( 1 )   157 - 162   2012.1

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    The activity of the lateral pterygoid muscle has been regarded to be related to the pathological condition of the temporomandibular joint (TMJ) in the craniomandibular disorders. Because the lateral pterygoid muscle is a deep muscle, a needle electrode is necessary for EMG recordings. The purpose of this study was to establish a non-invasive method for the evaluation of muscle activity of the lateral pterygoid muscle using mechanomyogram (MMG). In three male subjects, surface electromyogram (EMG) in the left masseter muscle, left anterior and posterior belly of the temporal muscle, left anterior belly of the digastric muscle and needle EMG of the inferior head of the lateral pterygoid were recorded during mandibular movement tasks simultaneously with the MMG derived from a condenser microphone in the external ear canal. There were significant positive correlations between the needle EMG signal of the lateral pterygoid muscle and the MMG signal for the tasks of static jaw opened position of 30 mm of interincisal distance (p = 0.000, R(2)=0.725), static jaw opened position of 40 mm of interincisal distance (p = 0.000, R(2) = 0.753), 5 mm protruded mandibular position (p = 0.000, R(2) = 0.653), the most protruded mandibular position (p = 0.000, R(2) = 0803). On the contrary, for the task of maximal clenching, there was no significant correlation between the EMG signal of the lateral pterygoid muscle and the MMG signal. These results suggest that the activity of the lateral pterygoid muscle could be evaluated by the MMG signals recorded in the external ear canal, unless jaw closing major muscles show active contraction. (C) 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jneumeth.2011.09.026

    Web of Science

    researchmap

  • 二ケイ酸リチウムガラスセラミックスに対する酸処理の影響

    山本 美恵, 丸尾 幸憲, 入江 正郎, 西川 悟郎, 岡 森彦, 玉田 宜之, 皆木 省吾

    日本補綴歯科学会誌   4 ( 1 )   E10 - E10   2012.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Mechanomyographic activity in the human lateral pterygoid muscle during mandibular movement

    Shigehisa Kawakami, Naoki Kodama, Naoto Maeda, Shunichi Sakamoto, Kazuhiro Oki, Yoshinobu Yanagi, Jun-Ichi Asaumi, Teruta Maeda, Shogo Minagi

    JOURNAL OF NEUROSCIENCE METHODS   203 ( 1 )   157 - 162   2012.1

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    The activity of the lateral pterygoid muscle has been regarded to be related to the pathological condition of the temporomandibular joint (TMJ) in the craniomandibular disorders. Because the lateral pterygoid muscle is a deep muscle, a needle electrode is necessary for EMG recordings. The purpose of this study was to establish a non-invasive method for the evaluation of muscle activity of the lateral pterygoid muscle using mechanomyogram (MMG). In three male subjects, surface electromyogram (EMG) in the left masseter muscle, left anterior and posterior belly of the temporal muscle, left anterior belly of the digastric muscle and needle EMG of the inferior head of the lateral pterygoid were recorded during mandibular movement tasks simultaneously with the MMG derived from a condenser microphone in the external ear canal. There were significant positive correlations between the needle EMG signal of the lateral pterygoid muscle and the MMG signal for the tasks of static jaw opened position of 30 mm of interincisal distance (p = 0.000, R(2)=0.725), static jaw opened position of 40 mm of interincisal distance (p = 0.000, R(2) = 0.753), 5 mm protruded mandibular position (p = 0.000, R(2) = 0.653), the most protruded mandibular position (p = 0.000, R(2) = 0803). On the contrary, for the task of maximal clenching, there was no significant correlation between the EMG signal of the lateral pterygoid muscle and the MMG signal. These results suggest that the activity of the lateral pterygoid muscle could be evaluated by the MMG signals recorded in the external ear canal, unless jaw closing major muscles show active contraction. (C) 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jneumeth.2011.09.026

    Web of Science

    researchmap

  • 小型計測装置による臼歯歯根膜感覚計測

    森本 雄太, 沖 和広, 松永 匡司, 熊崎 洋平, 美甘 真, 飯田 祥与, 杉本 恭子, 内藤 万弥, 川上 滋央, 前田 直人, 白髭 智子, 皆木 省吾

    日本補綴歯科学会誌   4 ( 1 )   E8 - E8   2012.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 下顎無歯顎に対する咬合・嚥下床ならびに咀嚼・嚥下床のための寸法提示を目的とした床形態計測―咬合・咀嚼リハビリテーションのための義歯床サイズ提案―.

    皆木省吾, 柴田豊文, 前田直人, 坂本隼一, 曽我恵子, 兒玉直紀, 西川悟郎

    老年歯科医学   2012

     More details

  • 合着用レジン添加グラスアイオノマーセメントの歯質接着性と曲げ特性.

    入江正郎, 田仲持郎, 松本卓也, 玉田宜之, 丸尾幸憲, 西川悟郎, 吉山昌

    接着歯学   2012

     More details

  • 接着剤で維持を図った耳介エピテーゼの作製

    神 桂二, 西川 悟郎, 太田 圭二, 坂本 隼一, 兒玉 直紀, 鵜川 由紀子, 皆木 省吾

    顎顔面補綴   34 ( 2 )   99 - 99   2011.12

     More details

    Language:Japanese   Publisher:(一社)日本顎顔面補綴学会  

    researchmap

  • 撃力を利用した歯根膜感覚計測

    森本 雄太, 沖 和広, 内藤 万弥, 白髭 智子, 松永 匡司, 皆木 省吾

    岡山歯学会雑誌   30 ( 2 )   85 - 86   2011.12

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • 高齢者・義歯装着者の摂食能力診断に向けての粒度解析咀嚼能力評価法

    杉本 恭子, 森山 毅, 近藤 良平, 飯田 祥与, 内藤 万弥, 皆木 省吾

    日本咀嚼学会雑誌   21 ( 2 )   140 - 141   2011.11

     More details

    Language:Japanese   Publisher:(NPO)日本咀嚼学会  

    researchmap

  • サマースクール開催報告第7回顎口腔機能セミナー

    井上 富雄, 皆木 省吾

    日本顎口腔機能学会雑誌 = The Journal of Japanese Society of Stomatognathic Function   18 ( 1 )   74 - 75   2011.10

     More details

    Language:Japanese  

    CiNii Article

    researchmap

  • Improvement of Surface EMG and its Portable Package

    MINAGI Shogo, NAITO Mami, OKI Kazuhiro

    18 ( 1 )   50 - 50   2011.10

     More details

  • 撃力を利用した歯根膜感覚計測

    森本 雄太, 沖 和広, 白髭 智子, 内藤 万弥, 杉本 恭子, 川上 滋央, 松永 匡司, 皆木 省吾

    日本顎口腔機能学会雑誌   18 ( 1 )   58 - 59   2011.10

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • 咬合支持回復時の空間認知能に対する分散学習の影響

    原 哲也, 黒住 明正, 坂本 隼一, 飯田 祥与, 荒木 大介, 黒田 知沙, 岡 森彦, 白井 肇, 皆木 省吾, 森 慎吾, 衣田 圭宏

    日本老年歯科医学会総会・学術大会プログラム・抄録集   22回   91 - 91   2011.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 抗血栓療法継続下での抜歯における止血状態

    豊田 眞仁, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   22回   104 - 104   2011.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 臼歯部咬合挙上が嚥下音および喉頭振動の周波数特性に及ぼす影響に関する実験的研究

    沖 和広, 白髭 智子, 杉本 恭子, 坂本 隼一, 荒木 大介, 飯田 祥与, 原 哲也, 皆木 省吾

    日本老年歯科医学会総会・学術大会プログラム・抄録集   22回   174 - 174   2011.6

     More details

    Language:Japanese   Publisher:(一社)日本老年歯科医学会  

    researchmap

  • 舌挙上運動の評価に関する研究

    白髭 智子, 森本 雄太, 内藤 万弥, 追坂 則弘, 洲脇 道弘, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   3 ( 特別号 )   263 - 263   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 補綴歯科治療の難易度を測定するプロトコルの信頼性と妥当性の検討

    木村 彩, 窪木 拓男, 市川 哲雄, 秀島 雅之, 佐藤 裕二, 玉置 勝司, 赤川 安正, 永尾 寛, 櫻井 薫, 馬場 一美, 皆木 省吾, 鱒見 進一, 佐藤 博信, 澤瀬 隆, 長岡 英一, 和気 裕之, 大山 喬史, 平井 敏博, 佐々木 啓一

    日本補綴歯科学会誌   3 ( 特別号 )   185 - 185   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • PMMA/アジピン酸ジビニル系レジンの義歯床への応用

    原 哲也, 田仲 持郎, 皆木 省吾

    日本補綴歯科学会誌   3 ( 特別号 )   209 - 209   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 長期間咬合支持を喪失させたラットにおける咬合支持の回復が空間認知能に及ぼす影響

    坂本 隼一, 原 哲也, 黒住 明正, 岡 森彦, 黒田 知沙, 河田 かずみ, 荒木 大介, 飯田 祥与, 皆木 省吾

    日本補綴歯科学会誌   3 ( 特別号 )   160 - 160   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 全身姿勢評価のための標準立位姿勢の確立 補綴治療が全身に及ぼす影響の評価基盤

    川上 滋央, 坂本 隼一, 前田 直人, 森本 雄太, 玉田 宜之, 洲脇 道弘, 兒玉 直紀, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   3 ( 特別号 )   168 - 168   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 新規粒度解析による食品種に依存しない咀嚼能力評価法 高齢者の食形態診断に向けて

    杉本 恭子, Iegami Carolina M, 飯田 祥与, 内藤 万弥, 鳥越 真由美, Tamaki Regina, 皆木 省吾

    日本補綴歯科学会誌   3 ( 特別号 )   215 - 215   2011.5

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 外耳道内で採得した筋音による咀嚼筋群筋活動評価に関する研究

    川上 滋央, 坂本 隼一, 前田 直人, 洲脇 道弘, 兒玉 直紀, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   3 ( 1 )   E12 - E12   2011.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • Effect of spherical silica additions on marginal gaps and compressive strength of experimental glass-ionomer cements

    Irie M, Nagaoka N, Tamada Y, Maruo Y, Nishigawa G, Minagi S, Finger WJ

    American Journal of Dentistry   24 ( 5 )   310 - 314   2011

     More details

  • Manifestation of preferred chewing side for hard food on TMJ disc displacement side.

    Ratnasari A, Hasegawa K, Oki K, Kawakami S, Yanagi Y, Asaumi JI, Minagi S

    J Oral Rehabil   38 ( 1 )   12 - 17   2011

  • 有床義歯装着者の機能評価のガイドライン

    志賀 博, 井上 富雄, 佐々木 啓一, 矢谷 博文, 山口 泰彦, 山崎 要一, 吉田 教明, 大川 周治, 津賀 一弘, 皆木 省吾, 小野 高裕, 祇園白 信二, 野村 修一, 鱒見 進一, 赤川 安正, 小林 義典, 古谷野 潔, 日本顎口腔機能学会, 顎口腔機能評価検討委員会, 有床義歯装着者の機能評価のガイドライン作成委員会

    日本顎口腔機能学会雑誌   17 ( ガイドライン )   E20 - E45   2010.9

     More details

    Language:Japanese   Publisher:日本顎口腔機能学会  

    researchmap

  • 摂食・嚥下障害ならびに構音障害に対する口腔内補助装置の適用に関するデータベースの構築

    佐々木 啓一, 小野 高裕, 中島 純子, 高橋 裕, 田中 貴信, 鈴木 哲也, 谷口 尚, 小正 裕, 岡崎 定司, 津賀 一弘, 吉川 峰加, 西 恭宏, 飯沼 利光, 川良 美佐雄, 皆木 省吾

    日本歯科医学会誌   29   72 - 76   2010.3

     More details

    Language:Japanese   Publisher:日本歯科医学会  

    日本歯科医学会プロジェクト研究事業は、早急な社会的対応を必要とする歯科関連疾患および障害に対する診療ガイドラインを策定することを目指すプロジェクト型の研究支援事業である。平成19年度の「摂食・嚥下障害、構音障害の口腔内補助装置のガイドラインに関するプロジェクト研究」には日本補綴歯科学会と老年歯科学会からの提案課題が採択され、両学会が協働し、舌接触補助床の適応症、検査・診断、製作・調整方法、効果に関する「舌接触補助床(PAP)ガイドライン(案)」を策定するに至った。診療ガイドラインのエビデンスは、一般的に行われる文献エビデンスとして英文29編、和文43編の論文から66編を抽出するとともに、多研究施設から本プロジェクトとして収集した180症例のデータベースの分析結果から抽出した。PAPの臨床での疑問(Clinical Question)は9項目を設定し、これらのClinical Questionに対するエビデンスに基づいた診療ガイドライン(案)を作成した。(著者抄録)

    researchmap

  • 短繊維グラスファイバーの添加が即時重合レジンの曲げ特性に与える影響

    丸尾 幸憲, 西川 悟郎, 入江 正郎, 玉田 宜之, 岡 森彦, 吉原 久美子, 皆木 省吾, 鈴木 一臣

    日本歯科理工学会誌   29 ( 2 )   189 - 189   2010.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    DOI: 10.14832/gsjsdmd.2010s.0.87.0

    researchmap

  • 上顎右側第一大臼歯に対する外力認知閾値に関する研究

    沖 和広, 森本 雄太, 白髭 智子, 難波 謙介, 川上 滋央, 洲脇 道弘, 皆木 省吾

    日本補綴歯科学会誌   2 ( 1 )   E21 - E21   2010.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 国際短期交換留学生ペアリング・システムの創成

    松尾 龍二, 山本 敏男, 皆木 省吾, 高柴 正悟, 佐々木 朗, 窪木 拓男, 永塚 仁, Yoshizo Matsuka, 白井 肇, 吉田 登志子

    平成21年度岡山大学学長裁量経費(教育研究プロジェクト等)成果報告書   2010

     More details

    Language:Japanese  

    researchmap

  • 卒前歯学臨床教育における学外インターンシップ実習の構築と今後の展望

    前川賢治, 窪木拓男, 伊澤俊次, 皆木省吾, 高柴正悟, 宮脇卓也, 江草正彦, 木村年秀, 山本敏男, 森田 学, 佐々木朗, 松尾龍二

    岡山歯科医学会雑誌   2010

     More details

  • Emergency Interim Denture Construction Method at Disaster Area

    Kurozumi Akimasa, Akamatsu Yoshitaka, Shiraki Atsushi, Nakashima Keiichiro, Saeki Masanori, Nishikawa Goro, Hara Tetsuya, Minagi Shogo

    Annals of Japan Prosthodontic Society   2 ( 4 )   260 - 266   2010

     More details

    Language:Japanese   Publisher:Japan Prosthodontic Society  

    &lt;b&gt;Purpose:&lt;/b&gt; During the Great Hanshin-Awaji Earthquake, denture loss was one of the serious problems that many elderly disaster victims encountered. A simple and effective denture fabrication procedure for these patients is reported and discussed in relation to the properties of this large-scale disaster.&lt;br&gt;Materials and Methods: Snap impression was taken as a final impression using irreversible hydrocolloid impression material. Base plate was made on the cast using self-curing acrylic resin. Joint artificial teeth were directly arranged on the base plate in the mouth. After artificial teeth arrangement, self-curing resin, which was mixed to show low viscosity, was poured on the surface of the base plate around the teeth directly to mold the polished surface. Finally, tissue conditioner was applied to the mucosal surface of the denture prosthesis.&lt;br&gt;&lt;b&gt;Discussion:&lt;/b&gt; The denture prosthesis fabricated according to this procedure would not be suitable for long-term use. However, it was designed to minimize fabrication time at the disaster site using conventional dental materials only and also to minimize the possible necessity of denture adjustment after insertion.&lt;br&gt;&lt;b&gt;Conclusions:&lt;/b&gt; This technique enables a handy, efficient denture fabrication at a large-scale disaster. After the whole experience of our rescue activity, it was suggested that denture fabrication at disaster sites should be selected according to the features and properties of the district and the type of disaster.

    CiNii Article

    researchmap

  • リン酸エステル系機能性モノマーによる歯質接着界面の形成メカニズムの解明

    吉原 久美子, 早川 聡, 長岡 紀幸, 吉田 靖弘, 鈴木 一臣, 皆木 省吾

    歯科材料・器械   28 ( 2 )   51 - 51   2009.3

     More details

    Language:Japanese   Publisher:(一社)日本歯科理工学会  

    DOI: 10.14832/gsjsdmd.2009s.0.39.0

    researchmap

  • 咀嚼の進行と咀嚼の側性の関係に関する研究

    長谷川 浩一, Ratnasari Ani, 西川 悟郎, 沖 和広, 皆木 省吾

    日本補綴歯科学会誌   1 ( 1 )   E3 - E3   2009.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • マイクロ波重合型義歯床用レジンの寸法精度向上の試み

    中島 啓一朗, 角谷 真一, 松永 匡司, 崎谷 公子, 森 慎吾, 岡本 信, 神 桂二, 丸尾 幸憲, 西川 悟郎, 皆木 省吾

    日本補綴歯科学会誌   1 ( 1 )   E15 - E15   2009.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • レジンセメントの長期サーマルサイクル負荷後の曲げ特性とジルコニアに対する接着性に関する研究

    玉田 宜之, 入江 正郎, 丸尾 幸憲, 西川 悟郎, 岡 森彦, 鈴木 一臣, 皆木 省吾

    日本補綴歯科学会誌   1 ( 1 )   E14 - E14   2009.1

     More details

    Language:Japanese   Publisher:(公社)日本補綴歯科学会  

    researchmap

  • 岡山大学病院NST専門療法士研修プログラムにおける口腔ケア実習の試み

    縄稚久美子, 住吉由季子, 三浦留美, 野口絢子, 有岡享子, 石田 瞭, 皆木省吾, 内藤 稔, 伊野英男, 坂本八千代, 松香芳三, 窪木拓男

    歯界展望特別号「めざせ! 健・口・美 未来に向けた歯科医療 第21回日本歯科医学会総会」   特別号   270   2009

     More details

  • Occlusion: Supporting and pacing force distribution.

    Minagi S, Kinuta Y, Sejima J, Hara T, Nishigawa G, Maruo Y, Arima T, Oki K, Oka M, Hasegawa K, Kodama N, Shimazu-Kodama C, Suwaki M, Torii Y, Shirai H

    Prosthodontic Research & Practice   7   117 - 119   2009

     More details

  • 部分床義歯模型実習の内容に関する歯学部学生の意識調査.

    原 哲也, 兒玉(島津)千恵, 白井 肇, 皆木省吾

    岡山歯学会雑誌   27 ( 1 )   13 - 18   2009

     More details

  • エアーブラシ・メイクアップを用いたエピテーゼの辺縁処理.

    牧野エミ, 鵜川由紀子, 神 桂二, 太田圭二, 神尾和加子, 西川悟郎, 皆木省吾

    顎顔面補綴   31 ( 1 )   53 - 56   2009

     More details

  • Deformation of mesh type stainless palatal plate of maxillary complete denture and the growth of microorganisms.

    Ratnasari A, Hasegawa K, Yoshihara K, Nagaoka N, Kokeguchi S, Nishigawa G, Fukui K, Minagi S

    日本補綴歯科学会雑誌   52 ( 4 )   555 - 558   2009

  • 岡山大学病院における摂食・嚥下リハビリテーションに関わる生涯教育支援.

    有岡享子, 石田 瞭, 今井美香子, 沼本庸子, 森 貴之, 江草正彦, 林 邦夫, 三浦留美, 沖 和広, 皆木省吾

    岡山歯学会雑誌   27 ( 2 )   81 - 87   2009

     More details

  • A New Design Prosthesis for the Occlusal and Masticatory Functional Rehabilitation for Edentulous Patient:-A Case of Dysphagia Patient Treated by a New Concept of Occluso-Swallow Prosthesis and Masticato-Swallow Prosthesis-

    Minagi Shogo, Shibata Toyofumi, Morimoto Hisayo, Soga Keiko, Shintani Miyabi, Nakamura Aya, Kawahara Tetsuko, Nishigawa Goro

    Ronen Shika Igaku   24 ( 3 )   293 - 299   2009

     More details

    Language:Japanese   Publisher:Japanese Society of Gerodontology  

    高齢者における総義歯の使用に際しては種々の口腔関連機能の適応能力低下等が問題となる。これまでにも高齢者に対する総義歯作製については多くの優れた方法も報告されている。しかし, その一方で高齢者施設や在宅の患者の口腔内には依然として安定した咬合や咀嚼につながらない総義歯がしばしば見受けられる。このことから, 口腔関連適応能力が低下した患者に対して施術が容易な総義歯様装置が必要とされていることが容易に推測される。&lt;BR&gt;咬合・嚥下床は, 日常生活における動作時, 会話時ならびに摂食時に安定した下顎位を得ることを目的とした床装置であり, 咬合接触による床の動揺を回避することで痛みなく安定して機能・維持できるよう作製された。すなわち, 歯槽頂ならびに両側のレトロモラーパッドを最低限覆うものとし, 舌および唇頬側関連筋群の随意および不随意運動時にも床縁がこれらの運動を全く侵害しない大きさの床縁を有する形態とした。すなわち咬合・嚥下床の唇舌幅径および頬舌幅径は, 健常無歯顎者の口腔関連筋群の機能運動と「調和」するよう作製される通常の総義歯よりも狭小に設定された。また, 人工歯排列は基本的に両側の下顎第二小臼歯と下顎第一大臼歯程度とした。&lt;BR&gt;本症例は入院時には義歯装着を拒否する患者と理解されていたが, 疼痛なく安定する咬合・嚥下床ならびに咀嚼・嚥下床は装着直後から積極的に受け入れられ, 咬合・嚥下機能のリハビリテーションを円滑に進めることが可能であった。

    CiNii Article

    researchmap

  • Effects of experimental palatal appliances on oral senses.

    Kodama N, Nishigawa G, Maruo Y, Minagi S, Matsuo R

    Prosthodontic Research & Practice   7   186 - 188   2009

     More details

  • Patients' satisfaction with design of removable denture.

    Tamada Y, Suwaki M, Kodama N, Nishigawa G, Maruo Y, Minagi S

    Prosthodontic Research & Practice   7   174 - 176   2009

     More details

  • Does electrodermal response represent severity of speech disability in the maxillectomy patients?

    Nishigawa G, Maruo Y, Oka M, Oki K, Hasegawa K, Minagi S

    Prosthodontic Research & Practice   7   165 - 167   2009

     More details

  • Achievements and Next Themes of Dental Section of Perioperative Management Center in Okayama University Hospital at 5 Months after Establishment

    28 ( 1 )   37 - 42   2009

  • Ultrasonic cleaning of silica-coated zirconia influences bond strength between zirconia and resin luting material

    Goro Nishigawa, Yukinori Maruo, Masao Irie, Morihiko Oka, Kumiko Yoshihara, Shogo Minagi, Noriyuki Nagaoka, Yasuhiro Yoshida, Kazuomi Suzuki

    DENTAL MATERIALS JOURNAL   27 ( 6 )   842 - 848   2008.11

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    The purpose of this study was to evaluate how ultrasonic cleaning of silica-coated zirconia surfaces would influence the latter's bond strength to resin luting material. Forty zirconia specimens were divided into four groups: one air abrasion group and three silica-coated groups. Silica-coated specimens were cleaned with distilled water using an ultrasonic cleaner after tribochemical silica coating and then divided into three groups according to cleaning durations: I minute, 5 minutes, or without cleaning. Following which, resin luting material was polymerized against the specimens. After storage in water for 24 hours, the specimens were subjected to shear bond strength test. Shear bond strength of silica-coated group without cleaning was significantly higher than the other three groups, but there were no statistically significant differences among the three latter groups. SEM images suggested visible differences among the treatment methods. With EDXS analysis, it was revealed that ultrasonic cleaning decreased the silica content on the treated surfaces. Therefore, results showed that ultrasonic cleaning of tribochemically silica-coated zirconia surfaces decreased the adhesion efficacy to resin luting material.

    DOI: 10.4012/dmj.27.842

    Web of Science

    researchmap

  • Distribution, gene expression, and functional role of EphA4 during ossification

    Chisa Kuroda, Satoshi Kubota, Kazumi Kawata, Eriko Aoyama, Kumi Sumiyoshi, Morihiko Oka, Miho Inoue, Shogo Minagi, Masaharu Takigawa

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   374 ( 1 )   22 - 27   2008.9

     More details

    Language:English   Publisher:ACADEMIC PRESS INC ELSEVIER SCIENCE  

    EphA4 receptor tyrosine kinase has been shown to be critically involved in neural tissue development. Here, we found EphA4 was also distributed among hypertrophic chondrocytes and osteoblasts in the growth plate of developing mouse long bones. In vitro evaluation revealed that ephA4 expression was elevated Upon hypertrophic differentiation of chondrocytes and that markedly stronger expression was observed in osteoblastic SaOS-2 than chondrocytic HCS-2/8 cells. Of note, RNAi-mediated silencing of ephA4 in SaOS-2 cells resulted in the repression of osteocalcin gene expression and alkaline phosphatase activity. Interestingly, confocal laser-scanning Microscopic analysis revealed the presence of EphA4 molecules in the nucleus as well as on the surface of SaOS-2 cells. These findings are the first indication of a critical role of EphA4 in ossification, especially at the final stage in which osteoblasts and hypertrophic chondrocytes play major roles. (C) 2008 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.bbrc.2008.06.089

    Web of Science

    researchmap

  • Distribution, gene expression, and functional role of EphA4 during ossification

    Chisa Kuroda, Satoshi Kubota, Kazumi Kawata, Eriko Aoyama, Kumi Sumiyoshi, Morihiko Oka, Miho Inoue, Shogo Minagi, Masaharu Takigawa

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   374 ( 1 )   22 - 27   2008.9

     More details

    Language:English   Publisher:ACADEMIC PRESS INC ELSEVIER SCIENCE  

    EphA4 receptor tyrosine kinase has been shown to be critically involved in neural tissue development. Here, we found EphA4 was also distributed among hypertrophic chondrocytes and osteoblasts in the growth plate of developing mouse long bones. In vitro evaluation revealed that ephA4 expression was elevated Upon hypertrophic differentiation of chondrocytes and that markedly stronger expression was observed in osteoblastic SaOS-2 than chondrocytic HCS-2/8 cells. Of note, RNAi-mediated silencing of ephA4 in SaOS-2 cells resulted in the repression of osteocalcin gene expression and alkaline phosphatase activity. Interestingly, confocal laser-scanning Microscopic analysis revealed the presence of EphA4 molecules in the nucleus as well as on the surface of SaOS-2 cells. These findings are the first indication of a critical role of EphA4 in ossification, especially at the final stage in which osteoblasts and hypertrophic chondrocytes play major roles. (C) 2008 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.bbrc.2008.06.089

    Web of Science

    researchmap

  • The effect of nasal speaking valve on the speech under experimental velopharyngeal incompetence condition

    M. Suwaki, K. Nanba, E. Ito, I. Kumakura, S. Minagi

    JOURNAL OF ORAL REHABILITATION   35 ( 5 )   361 - 369   2008.5

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    Velopharyngeal incompetence (VPI) is a contributing factor to speech disorders, frequently accompanying disorders, such as cleft palate, congenital paralysis of the soft palate, and cerebrovascular disease. For the treatment of these types of dysarthria, a Nasal Speaking Valve (NSV), which regulates nasal emission utilizing one-way valve, has been reported to be effective. As the unpleasantness while wearing the NSV was less than that with the conventional Palatal Lift Prosthesis, the NSV could be worn for a longer period of time. As NSV is inserted into the nostrils, this device could easily be provided for edentulous patients. This study aimed to evaluate the effect of NSV on experimentally induced VPI condition. Intelligibility of monosyllabic speech, intelligibility of conversational speech, nasalance score and acoustic analysis were used to evaluate the effect of NSV. Local infiltration anaesthesia was achieved to the area of levator veli palatini muscle and tensor veli palatine muscle of seven adult male subjects. In all subjects, remarkable suppression of the soft palate movement could be observed after the local infiltration anesthesia. Although the utterance supported by NSV under the experimentally induced VPI condition was less natural than the normal utterance, the intelligibility was markedly improved by the device. From the results of this study, the acoustic properties of NSV on the pure VPI condition, which was enabled by the newly established experimental induction, were revealed. This experimental model was also proved to provide a basis for the improvement in the treatment modalities for VPI.

    DOI: 10.1111/j.1365-2842.2008.01846.x

    Web of Science

    researchmap

  • The effect of nasal speaking valve on the speech under experimental velopharyngeal incompetence condition

    M. Suwaki, K. Nanba, E. Ito, I. Kumakura, S. Minagi

    JOURNAL OF ORAL REHABILITATION   35 ( 5 )   361 - 369   2008.5

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    Velopharyngeal incompetence (VPI) is a contributing factor to speech disorders, frequently accompanying disorders, such as cleft palate, congenital paralysis of the soft palate, and cerebrovascular disease. For the treatment of these types of dysarthria, a Nasal Speaking Valve (NSV), which regulates nasal emission utilizing one-way valve, has been reported to be effective. As the unpleasantness while wearing the NSV was less than that with the conventional Palatal Lift Prosthesis, the NSV could be worn for a longer period of time. As NSV is inserted into the nostrils, this device could easily be provided for edentulous patients. This study aimed to evaluate the effect of NSV on experimentally induced VPI condition. Intelligibility of monosyllabic speech, intelligibility of conversational speech, nasalance score and acoustic analysis were used to evaluate the effect of NSV. Local infiltration anaesthesia was achieved to the area of levator veli palatini muscle and tensor veli palatine muscle of seven adult male subjects. In all subjects, remarkable suppression of the soft palate movement could be observed after the local infiltration anesthesia. Although the utterance supported by NSV under the experimentally induced VPI condition was less natural than the normal utterance, the intelligibility was markedly improved by the device. From the results of this study, the acoustic properties of NSV on the pure VPI condition, which was enabled by the newly established experimental induction, were revealed. This experimental model was also proved to provide a basis for the improvement in the treatment modalities for VPI.

    DOI: 10.1111/j.1365-2842.2008.01846.x

    Web of Science

    researchmap

  • Nasal speaking valve: a device for managing velopharyngeal incompetence

    M. Suwaki, K. Nanba, E. Ito, I. Kumakura, S. Minagi

    JOURNAL OF ORAL REHABILITATION   35 ( 1 )   73 - 78   2008.1

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    Velopharyngeal incompetence is a contributing factor for speech disorders, and other frequently accompanying disorders, such as cleft palate, congenital paralysis of the soft palate and cerebrovascular disease. A palatal lift prosthesis (PLP) has been fabricated for managing velopharyngeal incompetence to improve speech. Because of discomfort, such as difficulty in swallowing or vomiting reflex, while wearing the PLP, rigorous adjustment is required. Patients may have difficulty becoming accustomed to using the prosthesis. This article reports on a newly developed device, the nasal speaking valve, for improving hypernasal speech caused by velopharyngeal incompetence.

    DOI: 10.1111/j.1365-2842.2007.01800.x

    Web of Science

    researchmap

  • Nasal speaking valve: a device for managing velopharyngeal incompetence

    M. Suwaki, K. Nanba, E. Ito, I. Kumakura, S. Minagi

    JOURNAL OF ORAL REHABILITATION   35 ( 1 )   73 - 78   2008.1

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    Velopharyngeal incompetence is a contributing factor for speech disorders, and other frequently accompanying disorders, such as cleft palate, congenital paralysis of the soft palate and cerebrovascular disease. A palatal lift prosthesis (PLP) has been fabricated for managing velopharyngeal incompetence to improve speech. Because of discomfort, such as difficulty in swallowing or vomiting reflex, while wearing the PLP, rigorous adjustment is required. Patients may have difficulty becoming accustomed to using the prosthesis. This article reports on a newly developed device, the nasal speaking valve, for improving hypernasal speech caused by velopharyngeal incompetence.

    DOI: 10.1111/j.1365-2842.2007.01800.x

    Web of Science

    researchmap

  • 岡山大学病院における摂食・嚥下リハビリテーションに関わる生涯教育支援.

    有岡享子, 石田 瞭, 今井美香子, 沼本庸子, 森 貴之, 江草正彦, 林 邦夫, 三浦留美, 沖 和広, 皆木省吾

    岡山歯学会雑誌   27 ( 2 )   81 - 87   2008

     More details

  • Ultrasonic cleaning of silica-coated zirconia influences bond strength between zirconia and resin luting material

    Goro Nishigawa, Yukinori Maruo, Masao Irie, Morihiko Oka, Kumiko Yoshihara, Shogo Minagi, Noriyuki Nagaoka, Yasuhiro Yoshida, Kazuomi Suzuki

    Dental Materials Journal   27 ( 6 )   842 - 848   2008

     More details

    Language:English  

    The purpose of this study was to evaluate how ultrasonic cleaning of silica-coated zirconia surfaces would influence the latter's bond strength to resin luting material. Forty zirconia specimens were divided into four groups: one air abrasion group and three silica-coated groups. Silica-coated specimens were cleaned with distilled water using an ultrasonic cleaner after tribochemical silica coating and then divided into three groups according to cleaning durations: 1 minute, 5 minutes, or without cleaning. Following which, resin luting material was polymerized against the specimens. After storage in water for 24 hours, the specimens were subjected to shear bond strength test. Shear bond strength of silica-coated group without cleaning was significantly higher than the other three groups, but there were no statistically significant differences among the three latter groups. SEM images suggested visible differences among the treatment methods. With EDXS analysis, it was revealed that ultrasonic cleaning decreased the silica content on the treated surfaces. Therefore, results showed that ultrasonic cleaning of tribochemically silica-coated zirconia surfaces decreased the adhesion efficacy to resin luting material.

    DOI: 10.4012/dmj.27.842

    Scopus

    PubMed

    researchmap

  • Deformation of mesh type stainless palatal plate of maxillary complete denture and the growth of microorganisms.

    Ratnasari A, Hasegawa K, Yoshihara K, Nagaoka N, Kokeguchi S, Nishigawa G, Fukui K, Minagi S

    日本補綴歯科学会雑誌   52 ( 4 )   555 - 558   2008

  • Effects of experimental palatal appliances on oral senses.

    Kodama N, Nishigawa G, Maruo Y, Minagi S, Matsuo R

    Prosthodontic Research & Practice   7   186 - 188   2008

     More details

  • Occlusion: Supporting and pacing force distribution.

    Minagi S, Kinuta Y, Sejima J, Hara T, Nishigawa G, Maruo Y, Arima T, Oki K, Oka M, Hasegawa K, Kodama N, Shimazu-Kodama C, Suwaki M, Torii Y, Shirai H

    Prosthodontic Research & Practice   7   117 - 119   2008

     More details

  • Patients' satisfaction with design of removable denture.

    Tamada Y, Suwaki M, Kodama N, Nishigawa G, Maruo Y, Minagi S

    Prosthodontic Research & Practice   7   174 - 176   2008

     More details

  • Does electrodermal response represent severity of speech disability in the maxillectomy patients?

    Nishigawa G, Maruo Y, Oka M, Oki K, Hasegawa K, Minagi S

    Prosthodontic Research & Practice   7   165 - 167   2008

     More details

  • 部分床義歯模型実習の内容に関する歯学部学生の意識調査.

    原 哲也, 兒玉(島津)千恵, 白井 肇, 皆木省吾

    岡山歯学会雑誌   27 ( 1 )   13 - 18   2008

     More details

  • エアーブラシ・メイクアップを用いたエピテーゼの辺縁処理.

    牧野エミ, 鵜川由紀子, 神 桂二, 太田圭二, 神尾和加子, 西川悟郎, 皆木省吾

    顎顔面補綴   31 ( 1 )   53 - 56   2008

     More details

  • The effect of Nasal Speaking Valve on the speech under experimental velopharyngeal incompetence condition

    Suwaki M, Nanba K, Ito E, Kumakura I, Minagi S

    The Journal of Japanese Society of Stomatognathic Function   15 ( 1 )   62 - 63   2008

     More details

    Language:Japanese   Publisher:Japanese Society of Stomatognathic Function  

    CiNii Article

    researchmap

  • シンポジウム2 顎関節症のブレークスルーはどこに?

    渡邉 誠, 小林 義典, 皆木 省吾, 山本 照子

    日本顎関節学会雑誌   20 ( 1 )   32 - 33   2008

     More details

    Language:Japanese   Publisher:一般社団法人 日本顎関節学会  

    CiNii Article

    researchmap

  • Gene expression and distribution of connective tissue growth factor (CCN2/CTGF) during secondary ossification center formation

    Morihiko Oka, Satoshi Kubota, Seiji Kondo, Takanori Eguchi, Chisa Kuroda, Kazumi Kawata, Shogo Minagi, Masaharu Takigawa

    JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY   55 ( 12 )   1245 - 1255   2007.12

     More details

    Language:English   Publisher:HISTOCHEMICAL SOC INC  

    CCN2/connective tissue growth factor (CCN2/CTGF) is a critical signaling modulator of mesenchymal tissue development. This study investigated the localization and expression of CCN2/CTGF as a factor supporting angiogenesis and chondrogenesis during development of secondary ossification centers in the mouse tibial epiphysis. Formation of the secondary ossification center was initiated by cartilage canal formation and blood vessel invasion at 7 days of age, and onset of ossification was observed at 14 days. In situ hybridization showed that CCN2/CTGF mRNA was distinctively expressed in the region of the cartilage canal and capsule-attached marginal tissues at 7 days of age, and distinct expression was also observed in proliferating chondrocytes around the marrow space at 14 days of age. Immunostaining showed that CCN2/CTGF was distributed broadly around the expressed cells located in the central region of the epiphysis, where the chondrocytes become hypertrophic and the cartilage canal enters into the hypertrophic mass. Furthermore, an overlapping distribution of metal loproteinase (MMP)9 and CCN2/CTGF was found in the secondary ossification center. These findings suggest that the CCN2/CTGF is involved in establishing epiphyseal vascularization and remodeling, which eventually determines the secondary ossification center in the developing epiphysial cartilage.

    DOI: 10.1369/jhc.7A7263.2007

    Web of Science

    researchmap

  • Gene expression and distribution of connective tissue growth factor (CCN2/CTGF) during secondary ossification center formation

    Morihiko Oka, Satoshi Kubota, Seiji Kondo, Takanori Eguchi, Chisa Kuroda, Kazumi Kawata, Shogo Minagi, Masaharu Takigawa

    JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY   55 ( 12 )   1245 - 1255   2007.12

     More details

    Language:English   Publisher:HISTOCHEMICAL SOC INC  

    CCN2/connective tissue growth factor (CCN2/CTGF) is a critical signaling modulator of mesenchymal tissue development. This study investigated the localization and expression of CCN2/CTGF as a factor supporting angiogenesis and chondrogenesis during development of secondary ossification centers in the mouse tibial epiphysis. Formation of the secondary ossification center was initiated by cartilage canal formation and blood vessel invasion at 7 days of age, and onset of ossification was observed at 14 days. In situ hybridization showed that CCN2/CTGF mRNA was distinctively expressed in the region of the cartilage canal and capsule-attached marginal tissues at 7 days of age, and distinct expression was also observed in proliferating chondrocytes around the marrow space at 14 days of age. Immunostaining showed that CCN2/CTGF was distributed broadly around the expressed cells located in the central region of the epiphysis, where the chondrocytes become hypertrophic and the cartilage canal enters into the hypertrophic mass. Furthermore, an overlapping distribution of metal loproteinase (MMP)9 and CCN2/CTGF was found in the secondary ossification center. These findings suggest that the CCN2/CTGF is involved in establishing epiphyseal vascularization and remodeling, which eventually determines the secondary ossification center in the developing epiphysial cartilage.

    DOI: 10.1369/jhc.7A7263.2007

    Web of Science

    researchmap

  • A custom-made sealing screw cap for a closed, hollow obturator

    Goro Nishigawa, Yukinori Maruo, Keiji Jin, Kazuhiro Oki, Shogo Minagi

    JOURNAL OF CRANIOFACIAL SURGERY   18 ( 5 )   1138 - 1141   2007.9

     More details

    Language:English   Publisher:LIPPINCOTT WILLIAMS & WILKINS  

    This paper describes a closed, hollow obturator with a nondetachable screw cap to seal the access hole that also allows cleaning of the inside of the bulb. A small screw cap was fabricated from a cobalt-chromium alloy. This screw was screwed to the access hole prepared at the top of the hollow obturator and when removed allows the inside of the obturator to be cleaned through the access hole. At the end of the screw, a preformed cobalt-chromium wire was attached that works as the safety retention mechanism of the screw. This ensures the screw in not aspirated or swallowed if it becomes unscrewed and falls from the prosthesis during wear in the patient's mouth. This device enables the patient to clean the inside of the closed obturator at home.

    DOI: 10.1097/scs.0b013e3180f61169

    Web of Science

    researchmap

  • A custom-made sealing screw cap for a closed, hollow obturator

    Goro Nishigawa, Yukinori Maruo, Keiji Jin, Kazuhiro Oki, Shogo Minagi

    JOURNAL OF CRANIOFACIAL SURGERY   18 ( 5 )   1138 - 1141   2007.9

     More details

    Language:English   Publisher:LIPPINCOTT WILLIAMS & WILKINS  

    This paper describes a closed, hollow obturator with a nondetachable screw cap to seal the access hole that also allows cleaning of the inside of the bulb. A small screw cap was fabricated from a cobalt-chromium alloy. This screw was screwed to the access hole prepared at the top of the hollow obturator and when removed allows the inside of the obturator to be cleaned through the access hole. At the end of the screw, a preformed cobalt-chromium wire was attached that works as the safety retention mechanism of the screw. This ensures the screw in not aspirated or swallowed if it becomes unscrewed and falls from the prosthesis during wear in the patient's mouth. This device enables the patient to clean the inside of the closed obturator at home.

    DOI: 10.1097/scs.0b013e3180f61169

    Web of Science

    researchmap

  • Purinergic modulation of area postrema neuronal excitability in rat brain slices

    Naoki Kodama, Makoto Funahashi, Yoshihiro Mitoh, Shogo Minagi, Ryuji Matsuo

    BRAIN RESEARCH   1165   50 - 59   2007.8

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    ATP has been shown to excite neurons in various regions of the central nervous system. Whereas immunohistochemical studies show P2X receptors in the area postrema, the responsiveness of area postrema neurons to extracellular ATP has not been studied. To investigate the effects of purinoceptor activation on area postrema neuronal excitability, we performed whole-cell recordings from area postrema neurons in rat brain slices. Most area postrema neurons responded to ATP application, and most responses were excitatory. Voltage-clamp recordings showed three different types of response: (1) a postsynaptic or extrasynaptic excitatory response (inward currents; n=26/51 cells), (2) a presynaptic excitatory response (increased frequency of miniature excitatory postsynaptic currents with only a small direct postsynaptic current; n = 24/51 cells, or (3) a postsynaptic inhibitory response (outward current; n=1/51). The excitatory responses were found in both of the two major electrophysiological cell classes, i.e. cells displaying I-h and cells not displaying I-h, while the inhibitory responses were found in only cells not displaying I-h. Current-clamp recordings showed ATP-induced depolarization (n = 13/15) or hyperpolarization (n = 2/15) of membrane potential that modulated the frequency of action potentials. In the presence of CNQX, mEPSCs were abolished and bath-applied ATP did not generate mEPSCs, indicating that glutamate release was facilitated by the activation of presynaptically located ATP receptors. Our pharmacological results from studies with ATP, alpha beta me-ATP, beta me-ATP and PPADS indicate that the post- and/or extrasynaptic responses are most likely mediated by P2X(7) receptors and/or receptors composed of P2X(2) and P2X(5) subunits. We conclude that half of the presynaptic responses are most likely mediated by P2X(7) receptors and/or receptors composed of P2X(2) and P2X(5) subunits while the others also contain P2X(1) subunits. it is well known that P2X(7) subunit forms only homomultimeric P2X receptors. Finally, the present study suggests that purinoceptor activation may contribute to the control of several autonomic functions by area postrema neurons. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.brainres.2007.06.003

    Web of Science

    researchmap

  • Purinergic modulation of area postrema neuronal excitability in rat brain slices

    Naoki Kodama, Makoto Funahashi, Yoshihiro Mitoh, Shogo Minagi, Ryuji Matsuo

    BRAIN RESEARCH   1165   50 - 59   2007.8

     More details

    Language:English   Publisher:ELSEVIER SCIENCE BV  

    ATP has been shown to excite neurons in various regions of the central nervous system. Whereas immunohistochemical studies show P2X receptors in the area postrema, the responsiveness of area postrema neurons to extracellular ATP has not been studied. To investigate the effects of purinoceptor activation on area postrema neuronal excitability, we performed whole-cell recordings from area postrema neurons in rat brain slices. Most area postrema neurons responded to ATP application, and most responses were excitatory. Voltage-clamp recordings showed three different types of response: (1) a postsynaptic or extrasynaptic excitatory response (inward currents; n=26/51 cells), (2) a presynaptic excitatory response (increased frequency of miniature excitatory postsynaptic currents with only a small direct postsynaptic current; n = 24/51 cells, or (3) a postsynaptic inhibitory response (outward current; n=1/51). The excitatory responses were found in both of the two major electrophysiological cell classes, i.e. cells displaying I-h and cells not displaying I-h, while the inhibitory responses were found in only cells not displaying I-h. Current-clamp recordings showed ATP-induced depolarization (n = 13/15) or hyperpolarization (n = 2/15) of membrane potential that modulated the frequency of action potentials. In the presence of CNQX, mEPSCs were abolished and bath-applied ATP did not generate mEPSCs, indicating that glutamate release was facilitated by the activation of presynaptically located ATP receptors. Our pharmacological results from studies with ATP, alpha beta me-ATP, beta me-ATP and PPADS indicate that the post- and/or extrasynaptic responses are most likely mediated by P2X(7) receptors and/or receptors composed of P2X(2) and P2X(5) subunits. We conclude that half of the presynaptic responses are most likely mediated by P2X(7) receptors and/or receptors composed of P2X(2) and P2X(5) subunits while the others also contain P2X(1) subunits. it is well known that P2X(7) subunit forms only homomultimeric P2X receptors. Finally, the present study suggests that purinoceptor activation may contribute to the control of several autonomic functions by area postrema neurons. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.brainres.2007.06.003

    Web of Science

    researchmap

  • 粉末焼結積層法による3D造形モデルの使用経験

    小山 貴弘, 西山 明慶, 岸本 晃治, 塚本 剛一, 目瀬 浩, 皆木 省吾, 竹内 哲男, 有地 秀裕, 佐々木 朗

    岡山歯学会雑誌   26 ( 1 )   52 - 52   2007.6

     More details

    Language:Japanese   Publisher:岡山歯学会  

    researchmap

  • Tensile bond strength between custom tray and elastomeric impression material

    Yukinori Maruo, Goro Nishigawa, Morihiko Oka, Shogo Minagi, Masao Irie, Kazuomi Suzuki

    DENTAL MATERIALS JOURNAL   26 ( 3 )   323 - 328   2007.5

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    The aim of this study was to investigate how to achieve sufficient and stable adhesive strength between impression material and tray. Impression materials were molded between autopolymerizing resin columns, and tensile strength was measured as a function of these factors: tray storage time (1, 2, 4, 7, and 10 days), adhesive drying time (0, 1, 5, 10, and 15 minutes), and tray surface roughness (air abrasion, bur-produced roughness, and no treatment). Tensile bond strength was not affected by tray storage time throughout the entire evaluation period of 10 days. As for tray adhesive drying time, Reprosil and Exaimplant yielded extremely low values for drying times of 10 minutes or less (P &lt; 0.05), while Imprint 11 and Impregum were not influenced by drying time. Vinyl polysiloxane achieved the highest adhesive strength with bur-produced roughness, which was significantly higher than with air abrasion or no treatment (P &lt; 0.05), whereas polyether achieved the lowest value with bur-produced roughness (P &lt; 0.05). It was concluded that surface treatment of custom tray should be adapted to the type of impression material used to achieve optimum bond strength.

    DOI: 10.4012/dmj.26.323

    Web of Science

    researchmap

  • Tensile bond strength between custom tray and elastomeric impression material

    Yukinori Maruo, Goro Nishigawa, Morihiko Oka, Shogo Minagi, Masao Irie, Kazuomi Suzuki

    DENTAL MATERIALS JOURNAL   26 ( 3 )   323 - 328   2007.5

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    The aim of this study was to investigate how to achieve sufficient and stable adhesive strength between impression material and tray. Impression materials were molded between autopolymerizing resin columns, and tensile strength was measured as a function of these factors: tray storage time (1, 2, 4, 7, and 10 days), adhesive drying time (0, 1, 5, 10, and 15 minutes), and tray surface roughness (air abrasion, bur-produced roughness, and no treatment). Tensile bond strength was not affected by tray storage time throughout the entire evaluation period of 10 days. As for tray adhesive drying time, Reprosil and Exaimplant yielded extremely low values for drying times of 10 minutes or less (P &lt; 0.05), while Imprint 11 and Impregum were not influenced by drying time. Vinyl polysiloxane achieved the highest adhesive strength with bur-produced roughness, which was significantly higher than with air abrasion or no treatment (P &lt; 0.05), whereas polyether achieved the lowest value with bur-produced roughness (P &lt; 0.05). It was concluded that surface treatment of custom tray should be adapted to the type of impression material used to achieve optimum bond strength.

    DOI: 10.4012/dmj.26.323

    Web of Science

    researchmap

  • The design of non-occlusal intraoral appliances on hard palate and their effect on masseter muscle activity during sleep

    Koichi Hasegawa, Makoto Okamoto, Goro Nishigawa, Kazuhiro Oki, Shogo Minagi

    CRANIO-THE JOURNAL OF CRANIOMANDIBULAR PRACTICE   25 ( 1 )   8 - 15   2007.1

     More details

    Language:English   Publisher:CHROMA INC  

    This study aimed to reveal whether masseter muscle activity during sleep is affected by the difference in design of non-occlusal intraoral appliances on hard palate. Eight healthy Japanese participants were selected and wore each of the four types of appliances (horse shoe, thin, thick and medium thick) during sleep for one week with a one week interval without appliance during sleep. A masseter muscle electromyograph (EMG) was recorded during sleep. The EMG activities were analyzed by calculating the number of bursts per hour, episodes per hour, and bursts per episode. The EMG parameters with the thick type appliance were significantly lower than the baseline condition without appliance. In this study, it is suggested that a thick type appliance has an active effect on suppression of masseter muscle activity.

    Web of Science

    researchmap

  • The design of non-occlusal intraoral appliances on hard palate and their effect on masseter muscle activity during sleep

    Koichi Hasegawa, Makoto Okamoto, Goro Nishigawa, Kazuhiro Oki, Shogo Minagi

    CRANIO-THE JOURNAL OF CRANIOMANDIBULAR PRACTICE   25 ( 1 )   8 - 15   2007.1

     More details

    Language:English   Publisher:CHROMA INC  

    This study aimed to reveal whether masseter muscle activity during sleep is affected by the difference in design of non-occlusal intraoral appliances on hard palate. Eight healthy Japanese participants were selected and wore each of the four types of appliances (horse shoe, thin, thick and medium thick) during sleep for one week with a one week interval without appliance during sleep. A masseter muscle electromyograph (EMG) was recorded during sleep. The EMG activities were analyzed by calculating the number of bursts per hour, episodes per hour, and bursts per episode. The EMG parameters with the thick type appliance were significantly lower than the baseline condition without appliance. In this study, it is suggested that a thick type appliance has an active effect on suppression of masseter muscle activity.

    Web of Science

    researchmap

  • 顎顔面手術におけるインクジェット法3D造型モデルの使用経験

    小山貴弘, 西山明慶, 岸本晃治, 塚本剛一, 目瀬 浩, 竹内哲男, 有地秀裕, 皆木省吾, 佐々木 朗

    岡山歯学会雑誌   26 ( 2 )   141 - 145   2007

     More details

    Language:Japanese   Publisher:岡山歯学会  

    症例1:22歳女性。顎変形症による下顎前突で、術前矯正を行い下顎枝垂直骨切り術を施行し経過良好であったが、オトガイの突出感残存があり、オトガイ部を5mm短縮させるオトガイ形成術が計画された。症例2:15歳女性。唇顎口蓋裂による歯列不正改善のため来院した。口蓋の骨欠損が大きく、骨移植ではドナーサイトの侵襲も極めて大きくなることが考えられたため、あらかじめ仮骨延長を行い骨欠損の範囲縮小を図るという治療計画が立案された。症例3:81歳女性。顎骨浸潤を示す歯肉癌で、下顎骨区域切除と同時に再建用プレートを用いた即時再建が予定された。いずれも術前にインクジェット法3D造型モデルを作製し、手術シミュレーションを行った。光造型法による3D造型モデルとの比較において、インクジェット法モデルは、モデルサージェリーを行うにあたり光造型法モデルと同等の必要十分な精度と強度を有していた。また加工性、色調、造形コスト、造形時間の点において、光造型法モデルに比し優位性を有していた。

    researchmap

  • 文献からみる歯科治療時の嘔吐に対するアプローチ.

    兒玉直紀, 舩橋 誠, 皆木省吾

    日本歯科評論   67 ( 1 )   182 - 184   2007

     More details

  • 咬合支持の有無が記憶力に与える影響について.

    黒住明正, 原 哲也, 皆木省吾

    日本歯科評論   67 ( 2 )   182 - 184   2007

     More details

  • Balancing-side occlusion and TMJ.

    Minagi S

    Dentistry in Japan   43   183 - 188   2007

     More details

  • 咬合,ブラキシズムと歯根膜感覚.

    皆木省吾, 沖 和広, 長谷川浩一

    日本全身咬合学会雑誌   13 ( 2 )   110 - 114   2007

     More details

  • 文献と臨床の橋わたし 補綴にともなう患者満足度の評価 顎補綴を中心に

    鵜川由紀子, 西川悟郎, 皆木省吾

    日本歯科評論   67 ( 3 )   182 - 184   2007

     More details

  • 鼻咽腔閉鎖不全用 Nasal Speaking Valve.

    皆木省吾

    ものづくり支援部門年報   27   18   2007

     More details

  • 文献と臨床の橋わたし 補綴にともなう患者満足度の評価 顎補綴を中心に

    鵜川由紀子, 西川悟郎, 皆木省吾

    日本歯科評論   67 ( 3 )   182 - 184   2007

     More details

  • 咬合,ブラキシズムと歯根膜感覚.

    皆木省吾, 沖 和広, 長谷川浩一

    日本全身咬合学会雑誌   13 ( 2 )   110 - 114   2007

     More details

  • 文献からみる歯科治療時の嘔吐に対するアプローチ.

    兒玉直紀, 舩橋 誠, 皆木省吾

    日本歯科評論   67 ( 1 )   182 - 184   2007

     More details

  • Balancing-side occlusion and TMJ.

    Minagi S

    Dentistry in Japan   43   183 - 188   2007

     More details

  • 鼻咽腔閉鎖不全用 Nasal Speaking Valve.

    皆木省吾

    ものづくり支援部門年報   27   18   2007

     More details

  • 咬合支持の有無が記憶力に与える影響について.

    黒住明正, 原 哲也, 皆木省吾

    日本歯科評論   67 ( 2 )   182 - 184   2007

     More details

  • Enhanced vertical alveolar bone augmentation by recombinant human bone morphogenetic protein-2 with a carrier in rats

    C Shimazu, T Hara, Y Kinuta, K Moriya, Y Maruo, S Hanada, S Minagi

    JOURNAL OF ORAL REHABILITATION   33 ( 8 )   609 - 618   2006.8

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    This study aimed to evaluate the effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) on vertical bone regeneration of edentulous ridge. Bilateral upper first and second molars of 8-week-old Wistar rats were extracted and the ridges were allowed to heal for 3 weeks. Compressed poly(lactic-co-glycolic acid) copolymer/gelatin sponge (PGS) was used as a carrier of rhBMP-2. PGS alone (control group) or PGS with 5 mu g rhBMP-2 (test group) was implanted at the top part of alveolar ridge. The sham group received no implantation. The rats were killed at 1, 2, 4, 8 and 12 weeks after implantation and examined histologically and histomorphometrically. In the test group, significant bone augmentation was evident on the alveolar ridge throughout the experimental period. Histomorphometric analysis revealed greater tissue volume and height of alveolar bone in the test group compared with the control and sham groups (P &lt; 0.05) from 4 weeks onward and the augmented tissues (5 mm(3) in tissue volume and 1.5 mm in bone height) were maintained until 12 weeks. Osteoblast surface increased at 2 and 4 weeks and osteoid thickness reached a peak (25 mu m) at 2 weeks. Dynamic variables, which represented calcification, were higher in the test group than the control and sham groups at 4 and 8 weeks (P &lt; 0.05). These results suggest that use of rhBMP-2/PGS may achieve vertical bone augmentation, and stabilizes denture prosthesis or makes up for inadequate bone mass for implant prosthesis.

    DOI: 10.1111/j.1365-2842.2005.01593.x

    Web of Science

    researchmap

  • Does rotational strain at screw tightening affect the attainment or maintenance of osseointegration?

    Katsunori Moriya, Yukinori Maruo, Shogo Minagi

    CLINICAL ORAL IMPLANTS RESEARCH   17 ( 4 )   451 - 458   2006.8

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING  

    Objectives: This study investigated whether rotational strain affects osseointegration.
    Material and Methods: A total of 135 male rats were divided into five groups: 2-w rotation, 4-w rotation, 8-w rotation, 12-w rotation and control. Two hundred and seventy implants were inserted in rat tibia. The control group received no strain, while the 2-w, 4-w, 8-w and 12-w rotation groups received rotational strain at 2, 4, 8 and 12 weeks after implant placement, respectively. Removal torque (N cm) was measured in vivo. Bone contact rate (%) was calculated histomorphologically. Immunostaining for osteonectin (ON), osteopontin (OPN) and osteocalcin (OCN) was performed. The removal torque and bone contact rate were analyzed using one-way analyses of variance and the Scheffe method.
    Results: At 4 weeks, the torque was significantly higher in the 2-w rotation group (1.30 +/- 0.44 N cm) than in the control group (0.79 +/- 0.67 N cm). From 8 to 16 weeks, the strained groups showed no significant differences from the control group. From the bone contact rates, bone formation was larger in the 4-week rotation group (62.9 +/- 10.7%) than in the control group (42.1 +/- 17.9%) at 8 weeks. The 4-week rotation group showed higher bone contact rate (61.1 +/- 11.3%) compared with the other strained groups and maintained this higher value until 16 weeks, showing no significant difference from the control group (72 +/- 5.2%). At the implant-bone interface, OPN was widely distributed and OCN was detected at a low level; however, ON could not be observed in any group.
    Conclusions: The bone contact rate changed when rotational strain was exerted at different periods after implant placement. However, the removal torque and distribution of extracellular matrix proteins were not adversely affected by the rotational strain.

    DOI: 10.1111/j.1600-0501.2005.01243.x

    Web of Science

    researchmap

  • Possible role of LRP1, a CCN2 receptor, in chondrocytes

    K Kawata, T Eguchi, S Kubota, H Kawaki, M Oka, S Minagi, M Takigawa

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   345 ( 2 )   552 - 559   2006.6

     More details

    Language:English   Publisher:ACADEMIC PRESS INC ELSEVIER SCIENCE  

    Low density lipoprotein receptor (LDLR)-related protein 1 (LRP1/CD91) is one of the receptors of CCN2 that conducts endochondral ossification and cartilage repair. LRP1 is a well-known endocytic receptor, but its distribution among chondrocytes remains to be elucidated. We herein demonstrate for the first time that the distribution of LRP1 in chondrocytes except for hypertrophic chondrocytes in vivo and in vitro. Interestingly, the LRP1 levels were higher in mature chondrocytic HCS-2/8 and osteoblastic SaOS-2 than in other cells, whereas the other LDLR family members involved in ossification were detected at lower levels in HCS-2/8. It was interesting to note that in HCS-2/8, LRP1 was observed not only on the cell surface and in the cytoplasm, but also in the nucleus. Exogenously added CCN2 was incorporated into HCS-2/8, which was partially co-localized with LRP1, and targeted to the recycling endosomes and nucleus as well as the lysosomes. These findings suggest specific roles of LRP1 in cartilage biology. (c) 2006 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.bbrc.2006.04.109

    Web of Science

    researchmap

  • Effect of adhesive primer developed exclusively for heat-curing resin on adhesive strength between plastic artificial tooth and acrylic denture base resin

    G Nishigawa, Y Maruo, M Okamoto, K Oki, Y Kinuta, S Minagi, M Irie, K Suzuki

    DENTAL MATERIALS JOURNAL   25 ( 1 )   75 - 80   2006.3

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    Despite progress in the development of denture base resin and artificial tooth materials, dental clinics are still plagued with artificial teeth falling off the denture base - due to poor bond strength - after denture delivery. Against this background, this study sought to examine the effect and durability of an adhesive primer developed exclusively for heat-curing resin on the adhesive strength of heat-curing denture base acrylic resin to plastic artificial tooth. Test specimens wore divided into four groups according to the treatment method of the artificial tooth's test bonding surface: air abrasion, adhesive primer application, adhesive primer application after air abrasion, and pretreatment only (control). After heat curing of acrylic resin onto the bonding surface, shear test was performed for two storage periods: 24-hour versus 100-day water storage. From the results obtained, it was revealed that the evaluated adhesive primer was significantly effective in increasing adhesive strength between artificial tooth and acrylic resin, although specimens were stored in water for 100 days.

    DOI: 10.4012/dmj.25.75

    Web of Science

    researchmap

  • 義歯と咬合のエビデンス基盤.

    皆木省吾

    九州歯科学会雑誌   66,4・5,103-111   2006

     More details

  • 歯科医学からみた高校生期の歯・口腔の特徴-自律的な健康管理能力の育成のために-.

    皆木省吾

    日本学校歯科医会会誌   2006

     More details

  • Modified direct relining method produces an accurate adaptation denture

    Y Maruo, M Irie, G Nishigawa, M Oka, S Minagi, K Suzuki

    DENTAL MATERIALS JOURNAL   24 ( 3 )   311 - 314   2005.9

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    The purpose of this study was to examine if a modified direct relining method could result in excellent denture adaptation compared to a conventional method. Direct relining was done using heat-polymerized acrylic resin base on a maxillary cast; With two times of three seconds of cooling using dichloro-difluoro-methane coolant. Discrepancy between cast and intaglio surface at residual ridge and center of palate was measured at 12 minutes after mixing of resin (Time 0) and at 24 hours or seven days after water immersion (36 degrees C). At Time 0 (with three seconds of cooling), the discrepancy at ridge (0.39 +/- 0.27) and palate (0.66 +/- 0.31) was significantly lower compared to that of control (ridge = 0.93 +/- 0.51; palate = 1.14 +/- 0.13, P &lt; 0.05); and the same observations occurred at 24 hours and seven days too. On intaglio side (with three seconds of cooling), the peak temperature was 5 degrees C lower than that of control and it occurred at a delay of about 60 seconds. Based on the results of this study, we therefore suggested that this delayed and lowered temperature served to improve the adaptability of denture base.

    DOI: 10.4012/dmj.24.311

    Web of Science

    researchmap

  • Is the posterior belly of the digastric muscle palpable? A qualitative systematic review of the literature

    JC Turp, T Arma, S Minagi

    CLINICAL ANATOMY   18 ( 5 )   318 - 322   2005.7

     More details

    Language:English   Publishing type:Book review, literature introduction, etc.   Publisher:WILEY-LISS  

    Palpation of the posterior belly of the digastric muscle in the postmandibular region is included in many study protocols and examination schemes of the masticatory system. The aim of the present investigation was to systematically search the dental/medical literature to find evidence for the palpability of this muscle. In August 2004, a systematic search was carried out using different electronic databases (PubMed, Cochrane Library, Web of Science, Japana Centra Revuo Medicina, MedPilot, Latin American and Caribbean Health Sciences, and three on-line databases of dental journals not listed currently in Medline), supplemented by manual search in the Austrian journal Stoniatologie. Additional manual searches were carried out in the Journal of Orofacial Pain and Journal of Dental Research to identify pertinent abstracts of scientific congresses. One relevant hit was found in the Japanese database. The manual search showed one pertinent congress abstract. In both publications, the authors concluded that due to anatomical reasons the posterior belly of the digastric muscle was not palpable. Hence, evidence is lacking that the posterior digastric muscle is accessible to palpation. Because the postmandibular region is usually tender upon palpation, a high incidence of positive findings can be expected even among healthy subjects. This may lead to wrong clinical judgments, possibly provoking unnecessary diagnostic and therapeutic measures. (c) 2005 Wiley-Liss, Inc.

    DOI: 10.1002/ca.20104

    Web of Science

    researchmap

  • 2回鋳造法を用いた補綴処置の有効性に関する研究.

    衣田圭宏, 原 哲也, 岡本 信, 岡 森彦, 兒玉直紀, 島津千恵, 洲脇道弘, 瀬島淳一, 皆木省吾

    岡山歯学会雑誌   2005

     More details

  • 顎関節症の咬合診断と治療を考える.

    皆木省吾, 沖 和広, 瀬島淳一

    補綴臨床   38,5,510-521   2005

     More details

  • 全部床義歯による無歯顎補綴治療 3.床下粘膜から総義歯を語る.

    原 哲也, 西川悟郎, 竹内哲男, 皆木省吾

    補綴臨床   38,3,321-331   2005

     More details

  • 補綴実技教育の評価を考える

    皆木省吾, 河野文昭, 會田雅啓, 稲井哲司, 塩山 司, 鱒見進一, 原 哲也

    日本補綴歯科学会雑誌   2005

     More details

  • Effect of plasma treatment on adhesion of self-curing repair resin to acrylic denture base

    G Nishigawa, Y Maruo, M Oka, M Okamoto, S Minagi, M Irie, K Suzuki

    DENTAL MATERIALS JOURNAL   23 ( 4 )   545 - 549   2004.12

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    Plasma irradiation on surface of heat-cured acrylic resin prior to processing self-curing acrylic resin is likely to effectively increase the adhesive strength between these materials for short-term period. However, long-term reliability of adhesive strength between these materials has not been clarified yet. In the present study, these materials were stored in water for a long period (100 days), and the effect on their shear bond strength was investigated. Forty-four test specimens with flat bonding test surface were made with heat-cured acrylic resin. They were divided into four groups according to treatment procedures for bonding surface: plasma treatment, adhesive primer application, adhesive primer application after plasma treatment, and no treatment (for control). Self-curing acrylic resin was processed against all bonding surfaces. After storage in water for 100 days, shear bond strength values between heat-cured and self-cured acrylic resins were measured. Specimens in plasma treatment group exhibited higher shear bond strength value than those in control, although the difference was not significant.

    DOI: 10.4012/dmj.23.545

    Web of Science

    researchmap

  • Investigation of preferred viscosity of irreversible hydrocolloid on preliminary impression for edentulism

    Y Maruo, M Irie, G Nishigawa, M Oka, S Minagi, K Suzuki

    DENTAL MATERIALS JOURNAL   23 ( 3 )   395 - 398   2004.9

     More details

    Language:English   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    This study aims to investigate the preferred viscosity of irreversible hydrocolloid used in the preliminary impression for edentulism. Thirteen modalities of irreversible hydrocolloid were prepared by changing the W/P ratio. Discrimination test for the preferred viscosity was performed on 11 prosthodontists (10.4 +/- 5.3 years of prosthetic experience). The parameter of discrimination test (P%) was calculated as the ratio of the number of adequate tests to the total number of tests. The P% and apparent viscosity coefficient (etaa) values measured by rheometer demonstrated good correlation (Y = -35.8X(2)+ 118.4X-22.8, r=0.86, p&lt;0.01). Prosthodontists could judge the preferred viscosity based on their clinical experiences. On the preliminary impression for edentulism, the preferred viscosity demonstrated in vitro using a polyurethane maxilla model was 1.21 x 10(3) Pa.s.

    DOI: 10.4012/dmj.23.395

    Web of Science

    researchmap

  • Does plasma irradiation improve shear bond strength of acrylic resin to cobalt-chromium alloy?

    Y Maruo, G Nishigawa, M Oka, S Minagi, K Suzuki, M Irie

    DENTAL MATERIALS   20 ( 5 )   509 - 512   2004.6

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objectives. Plasma treatment leads to surface modification such as the improved wettability of dental materials. Studies have suggested that plasma treatment may bring about an improvement in the shear bond strength between cobalt-chromium alloy and self-curing acrylic resin.
    Methods. Forty-eight cobalt-chromium alloy specimens were randomly divided into four groups (each of the groups consisted of 12 specimens); air abrasion, adhesive primer, adhesive primer after air abrasion, or after plasma irradiation. A self-curing acrylic resin, 2 mm thick and 3.6 mm in diameter, was processed on all, specimens before storage in distilled water at 37 degreesC for 24 h. Shear bond strength values were determined at a crosshead speed of 0.5 mm/min. Data was statistically analyzed using Scheffe's test.
    Results. Adhesive primer clearly increased the shear bond strength compared with air abrasion (p &lt; 0.05). The synergy of air abrasion and adhesive primer greatly increased the shear bond strength, showing a five-fold increase over air abrasion, or one and a half-fold over adhesive primer. A similar tendency in increase was observed in the adhesive primer after plasma treatment, but to a lower degree. Adhesive primer after plasma treatment showed half the shear bond strength of the treatment of adhesive primer after air abrasion (p &lt; 0.05). Moreover, adhesive primer after plasma treatment showed a lower shear bond strength than adhesive primer alone although the difference was not statistically significant.
    Significance. Plasma treatment does not improve adhesion between cobalt-chromium alloy and self-curing acrylic resin. (C) 2004 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.dental.2003.04.001

    Web of Science

    researchmap

  • 金属アレルギーが疑われる場合の対応.

    皆木省吾, 衣田圭宏

    高歯会報   333,34-43   2004

     More details

  • 「ゴシックディスプレイ」を用いた効率的なゴシックアーチ描記法.

    西川悟郎, 皆木省吾, 丸尾幸憲

    日本歯科評論   164,11,63-70   2004

     More details

  • Adhesive strength of self-curing resin to porcelain tooth with primers.

    G Nishigawa, Y Maruo, M Okamoto, K Oki, T Ohsawa, Y Ugawa, S Minagi, M Irie, K Suzuki

    JOURNAL OF DENTAL RESEARCH   82   427 - 427   2003.12

     More details

    Language:English   Publishing type:Research paper, summary (international conference)   Publisher:INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R  

    Web of Science

    researchmap

  • Galvanic skin response of maxillary bone resorted patients during pronunciation.

    G Nishigawa, Y Maruo, Y Kinuta, M Okamoto, K Oki, T Ohsawa, S Minagi

    JOURNAL OF DENTAL RESEARCH   82   400 - 400   2003.12

     More details

    Language:English   Publishing type:Research paper, summary (international conference)   Publisher:INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R  

    Web of Science

    researchmap

  • Plasma treatment increased shear bond strength between heat cured acrylic resin and self-curing acrylic resin

    G Nishigawa, Y Maruo, M Oka, K Oki, S Minagi, M Okamoto

    JOURNAL OF ORAL REHABILITATION   30 ( 11 )   1081 - 1084   2003.11

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    Self-curing acrylic resin is generally used for the repair of a fractured denture base. However, re-fracture of the repaired denture base resin often occurs because of poor bonding strength between the base resin and self-curing repair resin. The effect of plasma treatment on the shear bond strength between heat cured acrylic resin and the self-cured acrylic was examined. It was revealed that plasma irradiation is effective in increasing the shear bond strength. Plasma irradiation does not cause environmental pollution, as it does not require chemicals. It is a useful method to increase adhesive strength between heat cured acrylic resin and self-curing acrylic resin.

    DOI: 10.1046/j.1365-2842.2003.01198.x

    Web of Science

    researchmap

  • A new method for evaluating the threshold of periodontal ligament mechanoreceptor by slow speed mechanical stimulation

    K Oki, M Hamanaka, T Arima, S Takahashi, K Hasegawa, S Minagi

    JOURNAL OF PERIODONTAL RESEARCH   38 ( 5 )   482 - 487   2003.10

     More details

    Language:English   Publisher:BLACKWELL MUNKSGAARD  

    Objectives: This study aimed to establish a reliable method for detecting the threshold for perception of force applied to tooth and to report the basic properties of force threshold in the normal dentition subjects.
    Background: The perception of mechanical stimulation exerted to tooth is formed by input from periodontal ligament mechanoreceptors and intradental mechanoreceptors. Periodontal ligament mechanoreceptors respond to a wide range speed of stimulus, whereas intradental mechanoreceptors are activated only by a rapid stimulation. Reliable properties of perception have not been reported because of the difficulties to regulate velocity and degree of the stimulus.
    Methods: Eighteen healthy subjects were observed in this study (mean age: 27.2 +/- 5.7 years). A loading device to generate slow speed loading was fabricated and measured as follows: (i) the fluctuation of the force threshold within a day, (ii) day-to-day fluctuation, (iii) changes in the force threshold by a transient mechanical loading.
    Results: In the normal dentition, it was observed that the fluctuation within a day and day to day of the pressure sense showed no significant differences; however, a transient mechanical loading caused the sensitivity of the periodontal ligament to decrease significantly.
    Conclusions: The device examining the force threshold resulted from periodontal ligament mechanoreceptors was useful in evaluating the sensitivity of the periodontal ligament.

    DOI: 10.1034/j.1600-0765.2003.00679.x

    Web of Science

    researchmap

  • The effect of an experimental occlusal appliance on sleep bruxism: A preliminary report.

    T. Sakaguchi, T. Arima, S. Minagi

    JOURNAL OF DENTAL RESEARCH   82   B368 - B368   2003.6

     More details

    Language:English   Publishing type:Research paper, summary (international conference)   Publisher:INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R  

    Web of Science

    researchmap

  • Galvanic skin response as a parameter for evaluating speech disability.

    G. Nishigawa, Y. Maruo, M. Okamoto, M. Oka, K. Oki, Y. Kinuta, S. Minagi

    JOURNAL OF DENTAL RESEARCH   82   B187 - B187   2003.6

     More details

    Language:English   Publishing type:Research paper, summary (international conference)   Publisher:INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R  

    Web of Science

    researchmap

  • Finite element analysis of the effect of the bucco-lingual position of artificial posterior teeth under occlusal force on the denture supporting bone of the edentulous patient

    G Nishigawa, T Matsunaga, Y Maruo, M Okamoto, N Natsuaki, S Minagi

    JOURNAL OF ORAL REHABILITATION   30 ( 6 )   646 - 652   2003.6

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    To improve the quality of the complete denture prosthesis, the bucco-lingual position of the artificial posterior teeth must be determined with consideration of the shape of the maxillary and mandibular residual ridge and the relationship between them. The arrangement of posterior artificial teeth should be considered not only for the denture stability but also for the avoidance of high pressure on the supporting structures. A two-dimensional finite element method program to investigate the statics for the contour of the complete denture and the residual ridge was developed. With this program, the effect of the bucco-lingual position of the artificial posterior teeth under occlusal force on the denture supporting bone could be investigated.

    DOI: 10.1046/j.1365-2842.2003.01110.x

    Web of Science

    researchmap

  • Visual observation of the dynamic flow of elastomer rubber impression material between the impression tray and oral mucosa while seating the impression tray

    G Nishigawa, N Natsuaki, Y Maruo, M Okamoto, S Minagi

    JOURNAL OF ORAL REHABILITATION   30 ( 6 )   608 - 613   2003.6

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    The purpose of this study was to inspect visually, the dynamics of the impression flow at seating of the impression tray. The effects of the relief and the escape hole of the impression tray on the impression flow were also examined. Three types of the transparent impression tray (flat tray, relief tray and escape hole tray) were prepared. Transparent silicone polymer was put on the impression tray surface. Four drops of the dark blue silicone impression material was injected into the transparent silicone polymer on the impression tray. The impression tray was seated on the model of the denture-supporting mucosa. The movement of the four drops caused by the impression flow was visually recorded with the video camera and examined. The result for the flat tray showed that the impression material moved from inside to the outside. It was also shown that the speed of the moved impression material increased as the seating of the impression tray advanced. The results for the relief tray and the escape hole tray showed the effect of the relief and the escape hole prepared to the impression tray on the speed and the direction of the flow of the impression material.

    DOI: 10.1046/j.1365-2842.2003.01056.x

    Web of Science

    researchmap

  • Galvanic skin response of oral cancer patients during speech

    G Nishigawa, N Natsuaki, Y Maruo, M Okamoto, S Minagi

    JOURNAL OF ORAL REHABILITATION   30 ( 5 )   522 - 525   2003.5

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    Severe speech difficulty is often caused after surgery of an oral cancer. Prosthetic treatment with a removable obturator prosthesis is generally provided for such patients. Although some speech ability is recovered with prosthetic treatment, patients sometimes complain of continued dissatisfaction with their speech. However, it is difficult to evaluate the dissatisfaction. Therefore, a new method for evaluation is desirable. In this study, such a new method using the galvanic skin response as the index for the dissatisfaction of the patient was developed, and its objectivity was investigated. Eleven patients with maxillary bone defects were selected. Prior to the evaluation, improvement of speech with the removable prosthesis was confirmed using the speech intelligibility test and the visual analogue scale. The electrical resistant value at pronunciation was measured with the measuring system composed with the apparatus (galvanic skin response (GSR) measuring apparatus), the personal computer program. The changes for the electrical resistant value after pronunciation were evaluated by calculating the decrease ratio at pronunciation [(the mean electrical resistance before pronunciation - the mean electrical resistance after pronunciation)/the mean electrical resistance before pronunciation]. This decrease ratio at pronunciation was defined as the index of the speech dissatisfaction of the subject. The mean values for the decrease ratio with prosthesis were significantly smaller than the values without prosthesis (P &lt; 0.05). From the results of this study, it is suggested that the measurement of the electrical resistance change of the skin during speech could be a new method for evaluating the speech dissatisfaction of the post-oral-cancer patient.

    DOI: 10.1046/j.1365-2842.2003.01131.x

    Web of Science

    researchmap

  • Repair of Denture Base using Ultra-high Strength Reinforcing Polyethylene Braid

    SHIRAI Hajime, MANTANI Yuka, SUZUKI Yuuichirou, MINAGI Shogo

    15 ( 2 )   126 - 129   2003.3

     More details

  • The effect of diabetes mellitus on the expression of Argyrophilic nucleolar organizer regions (AgNORs) in mucosal epithelium under experimental denture bases in rats

    Y Maruo, T Sato, T Hara, S Mori, H Shirai, S Minagi

    JOURNAL OF ORAL PATHOLOGY & MEDICINE   32 ( 3 )   171 - 175   2003.3

     More details

    Language:English   Publisher:BLACKWELL MUNKSGAARD  

    Background: Expression of argyrophilic nucleolar organizer regions (AgNOR) was counted on mucosal epithelium to detect whether the AgNOR count (the number of AgNOR per nucleus) is, for 20 weeks, affected by streptozotocin-induced diabetes mellitus.
    Methods: Diabetic rats were applied non-denture wearing, non-pressure contact, continuous pressure (0.5, 1.5 or 3.4 kPa) and intermittent pressure (10.5, 33.0 or 81.7 kPa), respectively.
    Results: In the non-denture wearing or the non-pressure contact group, AgNOR count was almost constant (ranging 1.86-1.92) without significant difference. Under continuous pressure, AgNOR count significantly decreased at earlier stage and finally recovered to the non-pressure contact group. A similar effect of continuous pressure appeared to manifest itself in intermittent pressure, but to a greater degree. Consequently, AgNOR count under intermittent pressure showed no recovery at 20-week stage.
    Conclusion: Diabetes mellitus exerted, by itself, no influence on the cellular proliferative activity under continuous pressure, whereas the activity deteriorated under intermittent pressure.

    DOI: 10.1034/j.1600-0714.2003.00066.x

    Web of Science

    researchmap

  • Magnetic resonance imaging analysis on the relationship between anterior disc displacement and balancing-side occlusal contact

    M Ohta, S Minagi, T Sato, M Okamoto, M Shimamura

    JOURNAL OF ORAL REHABILITATION   30 ( 1 )   30 - 33   2003.1

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    The purpose of this study was to evaluate the relationship between balancing-side occlusal contact patterns and the prevalence of the internal derangement of the temporomandibular joint (TMJ). Forty-one patients were used for the magnetic resonance image (MRI) analysis of TMJ and occlusal examination. Balancing-side occlusal contact patterns observed during mandibular lateral excursive movements were classified into the three following categories: group A, simultaneous balancing-side contact, group B, balancing-side contact (with clenching only) and Group C, no balancing-side contact (with or without clenching). By the occlusal examination of 57 sides, 31.6% showed group A, 8.8% showed group B and 59.6% showed group C contact. Group A could not be observed in the patient group with normal disc position. In the disc displacement group, the prevalence of group A, group B and group C were 40.9, 6.8 and 52.3%, respectively. The higher prevalence of simultaneous balancing-side contact was revealed to be associated with articular disc dislocation.

    DOI: 10.1046/j.1365-2842.2003.01000.x

    Web of Science

    researchmap

  • 外的因子でつくられる顎関節症症状-心身症(広義の)・精神病圏の鑑別診断が不要な歯科治療を防ぐ

    小野 繁, 小野幸子, 皆木省吾

    補綴臨床   36(6), 478-487, 2003. 11   2003

     More details

  • 咬合と顎口腔機能異常に関する研究の現状.

    皆木省吾, 沖 和広

    日本顎頭蓋機能学会誌   16,1,1-7   2003

     More details

  • 金属アレルギーが疑われる場合.

    衣田圭宏, 皆木省吾

    日本歯科評論   63,9,63-68   2003

     More details

  • 有床義歯の長期維持・管理のために 義歯の装着と生体の反応

    原 哲也, 皆木省吾

    日本歯科評論   63(10),77-86   2003

     More details

  • Totaling of the Training Items based on the Clinical Training Common Curriculum for Junior-Residents at National University Dental Hospitals

    NOKUBI Takashi, NAGASHIMA Tadashi, MATSUYA Tokuzo, MORITA Manabu, IWAKURA Masaki, FUKUSHIMA Masayoshi, ARAKI Kouji, MAEDA Yoshinobu, MINAGI Shogo, OGAWA Tetsuji, MATSUO Takashi, MATSUYA Yoko, HARA Yoshitaka, TORII Mituo, KOHNO Shoji, OHYAMA Takashi

    18 ( 1 )   184 - 204   2002.12

     More details

  • Video Shooting of Dynamic Movement of Elastomer Rubber Impression Material under Impression Tray

    OKA M, NISHIGAWA G, MARUO Y, OKAMOTO M, OKI K, TAKAHASHI S, MINAGI S

    46 ( 108 )   107 - 107   2002.10

     More details

  • Histopathological changes in the tissues under a denture base in experimental osteoporosis with a non-pressure covering or bearing continuous pressure

    K Oki, T Sato, T Hara, S Minagi

    JOURNAL OF ORAL REHABILITATION   29 ( 6 )   594 - 603   2002.6

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    In this study, the experimental denture base on the hard palate of the molar region of osteoporotic rats was designed to cover without any mechanical pressure or to load continuous pressure (0.5, 1.5 or 3.4 kPa). Experimental osteoporosis was induced by ovariectomy and feeding on a low calcium diet. Histopathological changes induced by non-pressure covering or continuous pressure in the tissues under the experimental denture bases were examined. Regarding the histological changes induced by continuous pressure, this was evaluated in relation to the time course of the intensity of the continuous pressure. In the tissues under the denture base in osteoporotic condition with non-pressure covering, no histopathological changes caused by non-pressure covering were observed except for a transient slight proliferative reaction in the epithelial ridge. The following histopathological changes were observed in the tissues under the denture base in the osteoporotic condition bearing continuous pressure; (i) bone resorption was induced on the periosteal surface (Ps) in the osteoporotic-3.4 kPa group, and on the pressure side of the endocortical surface (p-Ec) in the osteoporotic-1.5 and -3.4 kPa group, (ii) the appearance of osteoclasts on the p-Ec in the osteoporotic-3.4 kPa group was earlier than that on the Ps in a same group, (iii) bone resorption on the pressure side of the Ec in the osteoporotic-3.4 kPa group manifested at the earlier stage than that in the osteoporotic-1.5 kPa group, (iv) bone formation following bone resorption on the p-Ec was observed more markedly than that on the Ps and (v) histopathological changes in the tissues under the denture base in experimental osteoporosis bearing continuous pressure had an intimate relationship with the initial intensity and the time course of continuous pressure.

    DOI: 10.1046/j.1365-2842.2002.00863.x

    Web of Science

    researchmap

  • 【目で見る咬合の基礎知識】 咬合器の顆路調節

    皆木 省吾, 上田 明広, 川田 哲男, 佐々木 啓一

    歯科技工   別冊 ( 目で見る咬合の基礎知識 )   78 - 85   2002.6

     More details

    Language:Japanese   Publisher:医歯薬出版(株)  

    researchmap

  • Masseter Muscle Electromyography Activity in the Vicinity of Canine Edge-to-Edge Position during Nocturnal Bruxism

    HASEGAWA K, OKAMOTO M, OKI K, NISHIGAWA G, HAMANAKA M, TAKAHASHI S, MINAGI S, SATO T

    46 ( 107 )   192 - 192   2002.5

     More details

  • Shear Bond Strength of Cobalt-Chromium Alloy to Self-curing Acrylic Resin with Plasma Treatment and Adhesive Primer

    MARUO Y., OKA M, NISHIGAWA G, TAKAHASHI S, HAMANAKA M, NAGAO N, MANTANI Y, MINAGI S

    19 ( 4 )   303 - 303   2002.3

     More details

  • Technique for removing a cemented superstructure from an implant abutment

    M Okamoto, S Minagi

    JOURNAL OF PROSTHETIC DENTISTRY   87 ( 2 )   241 - 242   2002.2

     More details

    Language:English   Publisher:MOSBY, INC  

    DOI: 10.1067/mpr.2002.119525

    Web of Science

    researchmap

  • Record base for an edentulous maxillary arch with severe undercuts in the labial aspect of the anterior residual ridge

    G Nishigawa, Y Maruo, M Okamoto, S Minagi

    JOURNAL OF PROSTHETIC DENTISTRY   87 ( 1 )   99 - 101   2002.1

     More details

    Language:English   Publisher:MOSBY, INC  

    A procedure is described for the fabrication of a record base for an edentulous maxillary arch with severe undercuts in the labial aspect of the anterior residual ridge. The record base is fabricated from autopolymerizing resin without soft lining materials and without blockout of the labial undercut of the stone cast.

    DOI: 10.1067/mpr.2002.120070

    Web of Science

    researchmap

  • 調節彎曲

    岡 森彦, 原 哲也, 皆木省吾

    月刊歯科技工別冊 目で見る咬合の基礎知識   166-167   2002

     More details

  • Double-casting method applied to the patient with tongue discomfort

    Minagi Shogo, Shirai Hazime, Sejima Junichi, Tanimoto Yuuko, Mantani Yuka, Suzuki Yuuichirou

    The Journal of Japanese Society of Stomatognathic Function   9 ( 1 )   102 - 104   2002

     More details

    Publisher:日本顎口腔機能学会  

    CiNii Article

    researchmap

  • Double-casting method applied to a patient with tongue discomfort

    Shirai Hajime, Sejima Jun-ichi, Mantani Yuka, Suzuki Yuuichiro, Tanimoto Yuuko, Minagi Shogo

    The Journal of Japanese Society of Stomatognathic Function   9 ( 1 )   53 - 60   2002

     More details

    Language:Japanese   Publisher:Japanese Society of Stomatognathic Function  

    Some patients complains tongue discomfort or inadaptation to newly inserted prosthesis. When treating the patient who takes in a delicate change of a occlusal relationship or an outline form of dental prosthesis, it would be of great importance to prepare an quality oral rehabilitation in harmony with stomatognathic function after the complaint is fully cared.&lt;BR&gt;We have been successful in providing treatment for those patient with highly keen oral sensory complains by using a double-casting method that could provide not only functionally generated path during both function and parafunction but also precise outline form which adapt to surrounding soft tissues. This procedure could eliminate several major source of the technical errors in cast restoration, which would affect the occlusion of the crown and bridge prosthesis. This method can eliminate the error caused by the distortion of the cast of opposing teeth, the error of the occlusal registration, the error in mounting casts on the articulator, the error caused by the fitness to the abutment tooth and the error caused by the proximal contact with adjacent tooth. All these errors could be eliminated with this double-casting method, because these errors could be compensated by the fitting procedure of the base crown prior to the molding of occlusal structure. The prosthesis produced by this method usually needs no adjustment on the final setting.&lt;BR&gt;Reporting one clinical case treated using this method, detailed procedure for this method was introduced.

    CiNii Article

    researchmap

  • 機能的咬合を精密に再現する2回鋳造法の改良

    白井 肇, 瀬島淳一, 皆木省吾

    Quintessence of Dental Technology   2002

     More details

  • 咬合干渉

    原 哲也, 西川悟郎, 皆木省吾

    月刊歯科技工別冊 目で見る咬合の基礎知識   68-71   2002

     More details

  • Maintenance of condylar position using an occlusal splint after mechanical vibrating-traction of the TMJ

    S Minagi, N Natsuaki, T Sato, Y Akamatsu, M Shimamura

    JOURNAL OF ORAL REHABILITATION   28 ( 12 )   1129 - 1132   2001.12

     More details

    Language:English   Publisher:BLACKWELL PUBLISHING LTD  

    Although adequate relief of excess mechanical loading to the joint has been accepted as one of the important treatment concepts in the orthopaedic field, a treatment method for the temporomandibular joint (TMJ) to relieve excess mechanical loading has not yet been established. This study aimed to clarify the effect of an occlusal splint on the maintenance of the distracted condylar position achieved by vibrating-traction method. Vibrating dynamic traction force was applied for 5 min to the right TMJ using vibrating-traction apparatus. A flat stabilization splint was adjusted to keep the mandibular position and the condylar displacement was evaluated for 6 h after the dynamic traction procedure. Mean vertical displacement of the mandibular right first molar immediately after the vibrating-traction for the six subjects was 156 pm (ranging from 141 to 179 mum). The calculated mean condylar displacement immediately after the traction was 480 mum and could be kept to be 381 mum even after 6 h by wearing the flat stabilization splint. From the results of this study, it was revealed that the mechanically tracted condylar position could be maintained by a flat occlusal splint. it was suggested that the vibrating-traction method followed by the provision of occlusal support might have a possibility to work as a mechanical relieving procedure for the TMJ.

    Web of Science

    researchmap

  • Palpation of the lateral pterygoid region in TMD - where is the evidence?

    JC Turp, S Minagi

    JOURNAL OF DENTISTRY   29 ( 7 )   475 - 483   2001.9

     More details

    Language:English   Publisher:ELSEVIER SCI LTD  

    Objective: Palpation of the lower head of the lateral pterygoid muscle is included in many study protocols and examination schemes of the masticatory system. The aim of this investigation was to search the medical/dental literature to find evidence for the validity and reliability of this diagnostic procedure.
    Methods:A systematic search was carried out using different electronic databases (Medline Ovid, PubMed, Cochrane Library, Embase, Current Contents Connect, Science Citation Index, Web of Science, Japana Centra Revuo Medicina), supplemented by handsearch in selected journals and by examination of the bibliographies of the identified articles.
    Results:Validity: As far as the palpability of the inferior head of the lateral pterygoid muscle is concerned, five publications representing four studies could be identified. According to these investigations, the lateral pterygoid muscle is practically inaccessible for intraoral palpation due to topographical and anatomical reasons. Other anatomical structures, such as the superficial head of the medial pterygoid muscle, may be palpated instead in this. region. Reliability: Determination of the palpability of the lateral pterygoid muscle is characterized by poor interexaminer agreement. Studies investigating the presence of pain in response to palpation of the lateral pterygoid area revealed a moderate intra- and interindividual reliability. Because of the tenderness of the lateral pterygoid region even among healthy subjects, positive findings may lead to wrong conclusions with regard to the need of treatment.
    Conclusions: Considering the lack of validity and reliability associated with the palpation of the lateral pterygoid area, this diagnostic procedure should be discarded. (C) 2001 Elsevier Science Ltd. All rights reserved.

    DOI: 10.1016/S0300-5712(01)00042-2

    Web of Science

    researchmap

  • Effect of a thick palatal appliance on muscular symptoms in craniomandibular disorders: A preliminary study

    S Minagi, M Shimamura, T Sato, N Natsuaki, M Ohta

    CRANIO-THE JOURNAL OF CRANIOMANDIBULAR PRACTICE   19 ( 1 )   42 - 47   2001.1

     More details

    Language:English   Publisher:CHROMA INC  

    Several treatment modalities for myofascial pain dysfunction syndrome (MPD) are being used at present. However, from the standpoint of patients' quality of life, it would be reasonable to seek a more effective treatment modality. This study aimed to show clinical data of a preliminary study regarding the effect of a thick palatal appliance, designed to fill the palatal concavity with a thick resin base, on muscular symptoms in eighteen MPD patients. Shown here are the clinical results of two patients using palatal appliances of two different thicknesses. In this study, MPD patients were divided into the three following groups: 1. no-treatment group; 2. thick palatal appliance group; and 3. medication group. Based on the results of this study, it was suggested that the thick palatal appliance could bring about early improvement of MPD syndrome. It is suggested that the thickness of the palatal plate an important factor in obtaining the clinical effect.

    Web of Science

    researchmap

  • 国立大学歯学部附属病院卒後研修共通カリキュラムに基づいた研修項目の集計ならびに評価システムの開発

    野首考祠, 長島 正, 松矢篤三, 森田 学, 岩倉政城, 福島正義, 荒木孝ニ, 前田芳信, 皆木省吾, 小川哲次, 松尾敬志, 松家洋子, 原 宜興, 鳥居光男, 河野正司, 大山喬史

    日本歯科医学教育学会雑誌   2001

     More details

  • 顎関節関節円板の急激な復位に伴って船酔い様症状を呈した顎関節内障の1症例

    西川悟郎, 皆木省吾, 佐藤隆志, 夏秋信邦, 原 哲也, 島村政行

    日本学関節学会雑誌   2001

  • Vibrating-traction method for mechanical joint distraction

    S Minagi, M Sakiya, T Sato, T Matsunaga, N Natsuaki

    JOURNAL OF ORAL REHABILITATION   27 ( 8 )   703 - 707   2000.8

     More details

    Language:English   Publisher:BLACKWELL SCIENCE LTD  

    Mechanical static traction has been adopted as one of the treatment procedures for joint diseases and fractures. The effect of mechanical vibration on the mechanical traction of the temporomandibular joint was studied in six human subjects. A mechanical traction force of 2000 gf was applied as a dynamic traction force with mechanical vibration or as a static traction force. The dynamic traction force with vibration was applied for 5 min to the right temporomandibular joint using a vibratingtraction apparatus which generated mechanical vibrations of 1000, 3000 or 4000 Hz. Application of a static traction force for 5 min was used as a control condition. Vertical condylar displacement was mathematically evaluated from the deviation of the mandible using Eddy current displacement sensors which were attached to the maxillary dental arch. Among the three vibration frequencies, 3000 Hz resulted in the maximum vertical condylar displacement for all six subjects, showing the mean condylar displacement of 668 +/- 242 mu m. In contrast, vibrations of 1000 and 4000 Hz showed a smaller traction effect. Application of the static traction force for 5 min resulted in a mean vertical condylar displacement of 5.7 +/- 4.9 mu m, showing almost no traction effect to the joint. From the results of this study, it was revealed that vibrating traction could distract a joint more effectively than could static traction and that the traction force necessary for effective vibrating traction was less than that for static traction.

    Web of Science

    researchmap

  • Comparative study of the temporomandibular joint space in maximum intercuspation and canine edge-to-edge positions in deep bite and non-deep bite subjects

    S Minagi, T Sato, K Kishi, N Natsuaki, Y Akamatsu

    JOURNAL OF ORAL REHABILITATION   27 ( 6 )   517 - 521   2000.6

     More details

    Language:English   Publisher:BLACKWELL SCIENCE LTD  

    In order to study the relationship between morphological properties of the TMJ and the mathematically predicted force distribution in the TMJ, the geometric distribution of the joint space on top of the condylar surfaces was evaluated. Seven deep bite subjects and seven non-deep bite subjects were used, and the joint space in the maximum intercuspation and canine edge-to-edge positions was analysed in each group. Standardized images of the TMJ were taken with computed tomography (CT) using a mandible positioner. The comparative ratio of joint space (CRJS) between the maximum intercuspation and the canine edge-to-edge positions was calculated and summarized on the map of the mean morphological outline of the condyle. On the balancing-side condyle, the CRTS of small value was distributed mainly on the anterior edge of the condyle in the non-deep bite group, whereas, in the deep bite group, it was distributed on the centre of the condyle. On the working-side condyle, the small CRJS was distributed around the lateral pole of the condyle in the non-deep bite group, whereas, in the deep bite group, it was found around the posterior part of the condyle. The distribution pattern of CRJS on the upper surface of the condyle in the non-deep bite group was consistent with the results of previous studies on mathematical simulation of TMJ loading. From the results of this study, it was suggested that the distribution of mechanical loading on the TMJ in the eccentric mandibular position would be highly affected by the comparative ratio of joint space. As the comparative ratio of joint space would be highly affected by the condylar position, the analysis of the morphology of the TMJ in relation to mechanical joint loading, in a future investigation, should be carried out on specific mandibular positions in relation to the function of the TMJ to be studied.

    Web of Science

    researchmap

  • Effect of eccentric clenching on mandibular deviation in the vicinity of mandibular rest position

    S Minagi, T Ohmori, T Sato, T Matsunaga, Y Akamatsu

    JOURNAL OF ORAL REHABILITATION   27 ( 2 )   174 - 178   2000.2

     More details

    Language:English   Publisher:BLACKWELL SCIENCE LTD  

    Although the mechanical compression of the temporomandibular joint (TMJ), which could be caused by bruxism, would probably result in a slight change of the occlusal relationship, the effect of clenching in the eccentric mandibular position on the occlusal contact has not pet been clarified. This study aimed to investigate the effect of eccentric clenching on bilateral condylar position and thus to estimate any change of occlusal contact. Before and after voluntary clenching, with one third of the maximal voluntary clenching force, for 3 min at the canine edge-to-edge position, vertical deviation of the bilateral condyles was measured at the 1 mm open mandibular position. This was regulated by the three-dimensional position of the anterior reference point which stands for the incisor point. The mean vertical displacement of the highly deviated side of the condyle was 141 +/- 55 mu m, and the calculated mean displacement of the mandibular first molar region of the highly deviated side was 65 +/- 27 mu m. From the results of this study, it was revealed that the eccentric clenching gave rise to three-dimensional deviation of the mandible even when the mandible was in the vicinity of the rest position.

    Web of Science

    researchmap

  • Argyrophilic nucleolar organizer regions (AgNORs) in mucosal epithelium under experimental denture bases in rats

    T Hara, T Sato, S Mori, H Shirai, Y Maruo, S Minagi

    JOURNAL OF ORAL PATHOLOGY & MEDICINE   29 ( 1 )   33 - 38   2000.1

     More details

    Language:English   Publisher:MUNKSGAARD INT PUBL LTD  

    The purpose of this study was to evaluate changes in the argyrophilic nucleolar organizer region (AgNOR) counts in mucosal epithelium induced by continuous or intermittent compressive pressure exerted through experimental denture bases and to examine the relationships between the AgNOR count, histopathological changes and the intensity of the pressure under denture bases. Continuous or intermittent compressive pressure exerted through the denture bases was applied to the hard palate of the molar region in rats. A morphometric analysis of AgNORs was performed in denture-supporting tissue 3 days and 1, 2, 4, 8, 12 and 20 weeks after the denture insertion. From the results of this study, it was found that non-pressure contact of the denture bases with palatal tissues did not change the AgNOR count. The AgNOR count was decreased by continuous or intermittent compressive pressure, and then recovered to almost the same level as, with the non-pressure contact at 20 weeks following a decrease of the pressure. The AgNOR counts in the epithelium under the denture bases were revealed to be related to the histopathological changes in the denture-supporting tissues and the intensity of the pressure under the denture bases.

    DOI: 10.1034/j.1600-0714.2000.290106.x

    Web of Science

    researchmap

  • 診断力てすと 左側口蓋部ヒリヒリ感

    皆木省吾, 赤松由崇

    デンタルダイヤモンド   第25巻・第2号・23〜24   2000

     More details

  • Comparative study of the temporomandibular joint space in maximum intercuspation and canine edge-to-edge positions in deep bite and non-deep bite subjects

    S. Minagi, T. Sato, K. Kishi, N. Natsuaki, Y. Akamatsu

    Journal of Oral Rehabilitation   27 ( 6 )   517 - 521   2000

     More details

    Language:English   Publishing type:Book review, literature introduction, etc.   Publisher:Blackwell Publishing Ltd  

    In order to study the relationship between morphological properties of the TMJ and the mathematically predicted force distribution in the TMJ, the geometric distribution of the joint space on top of the condylar surfaces was evaluated. Seven deep bite subjects and seven non-deep bite subjects were used, and the joint space in the maximum intercuspation and canine edge-to-edge positions was analysed in each group. Standardized images of the TMJ were taken with computed tomography (CT) using a mandible positioner. The comparative ratio of joint space (CRJS) between the maximum intercuspation and the canine edge-to-edge positions was calculated and summarized on the map of the mean morphological outline of the condyle. On the balancing-side condyle, the CRJS of small value was distributed mainly on the anterior edge of the condyle in the non-deep bite group, whereas, in the deep bite group, it was distributed on the centre of the condyle. On the working-side condyle, the small CRJS was distributed around the lateral pole of the condyle in the non-deep bite group, whereas, in the deep bite group, it was found around the posterior part of the condyle. The distribution pattern of CRJS on the upper surface of the condyle in the non-deep bite group was consistent with the results of previous studies on mathematical simulation of TMJ loading. From the results of this study, it was suggested that the distribution of mechanical loading on the TMJ in the eccentric mandibular position would be highly affected by the comparative ratio of joint space. As the comparative ratio of joint space would be highly affected by the condylar position, the analysis of the morphology of the TMJ in relation to mechanical joint loading, in a future investigation, should be carried out on specific mandibular positions in relation to the function of the TMJ to be studied. © 2000 Blackwell Science Ltd.

    DOI: 10.1046/j.1365-2842.2000.00538.x

    Scopus

    PubMed

    researchmap

  • Vibrating-traction method for mechanical joint distraction

    S. Minagi, M. Sakiya, T. Sato, T. Matsunaga, N. Natsuaki

    Journal of Oral Rehabilitation   27 ( 8 )   703 - 707   2000

     More details

    Language:English   Publisher:Blackwell Publishing Ltd  

    Mechanical static traction has been adopted as one of the treatment procedures for joint diseases and fractures. The effect of mechanical vibration on the mechanical traction of the temporomandibular joint was studied in six human subjects. A mechanical traction force of 2000 gf was applied as a dynamic traction force with mechanical vibration or as a static traction force. The dynamic traction force with vibration was applied for 5 min to the right temporomandibular joint using a vibrating-traction apparatus which generated mechanical vibrations of 1000, 3000 or 4000 Hz. Application of a static traction force for 5 min was used as a control condition. Vertical condylar displacement was mathematically evaluated from the deviation of the mandible using Eddy current displacement sensors which were attached to the maxillary dental arch. Among the three vibration frequencies, 3000 Hz resulted in the maximum vertical condylar displacement for all six subjects, showing the mean condylar displacement of 668 + 242 μm. In contrast, vibrations of 1000 and 4000 Hz showed a smaller traction effect. Application of the static traction force for 5 min resulted in a mean vertical condylar displacement of 5.7 ± 4.9 μm, showing almost no traction effect to the joint. From the results of this study, it was revealed that vibrating traction could distract a joint more effectively than could static traction and that the traction force necessary for effective vibrating traction was less than that for static traction. © 2000 Blackwell Science Ltd.

    DOI: 10.1046/j.1365-2842.2000.00563.x

    Scopus

    PubMed

    researchmap

  • Vibrating-traction method for mechanical joint distraction

    S. Minagi, M. Sakiya, T. Sato, T. Matsunaga, N. Natsuaki

    Journal of Oral Rehabilitation   27 ( 8 )   703 - 707   2000

     More details

    Language:English   Publisher:Blackwell Publishing Ltd  

    Mechanical static traction has been adopted as one of the treatment procedures for joint diseases and fractures. The effect of mechanical vibration on the mechanical traction of the temporomandibular joint was studied in six human subjects. A mechanical traction force of 2000 gf was applied as a dynamic traction force with mechanical vibration or as a static traction force. The dynamic traction force with vibration was applied for 5 min to the right temporomandibular joint using a vibrating-traction apparatus which generated mechanical vibrations of 1000, 3000 or 4000 Hz. Application of a static traction force for 5 min was used as a control condition. Vertical condylar displacement was mathematically evaluated from the deviation of the mandible using Eddy current displacement sensors which were attached to the maxillary dental arch. Among the three vibration frequencies, 3000 Hz resulted in the maximum vertical condylar displacement for all six subjects, showing the mean condylar displacement of 668 + 242 μm. In contrast, vibrations of 1000 and 4000 Hz showed a smaller traction effect. Application of the static traction force for 5 min resulted in a mean vertical condylar displacement of 5.7 ± 4.9 μm, showing almost no traction effect to the joint. From the results of this study, it was revealed that vibrating traction could distract a joint more effectively than could static traction and that the traction force necessary for effective vibrating traction was less than that for static traction. © 2000 Blackwell Science Ltd.

    DOI: 10.1046/j.1365-2842.2000.00563.x

    Scopus

    PubMed

    researchmap

  • Comparative study of the temporomandibular joint space in maximum intercuspation and canine edge-to-edge positions in deep bite and non-deep bite subjects

    S. Minagi, T. Sato, K. Kishi, N. Natsuaki, Y. Akamatsu

    Journal of Oral Rehabilitation   27 ( 6 )   517 - 521   2000

     More details

    Language:English   Publishing type:Book review, literature introduction, etc.   Publisher:Blackwell Publishing Ltd  

    In order to study the relationship between morphological properties of the TMJ and the mathematically predicted force distribution in the TMJ, the geometric distribution of the joint space on top of the condylar surfaces was evaluated. Seven deep bite subjects and seven non-deep bite subjects were used, and the joint space in the maximum intercuspation and canine edge-to-edge positions was analysed in each group. Standardized images of the TMJ were taken with computed tomography (CT) using a mandible positioner. The comparative ratio of joint space (CRJS) between the maximum intercuspation and the canine edge-to-edge positions was calculated and summarized on the map of the mean morphological outline of the condyle. On the balancing-side condyle, the CRJS of small value was distributed mainly on the anterior edge of the condyle in the non-deep bite group, whereas, in the deep bite group, it was distributed on the centre of the condyle. On the working-side condyle, the small CRJS was distributed around the lateral pole of the condyle in the non-deep bite group, whereas, in the deep bite group, it was found around the posterior part of the condyle. The distribution pattern of CRJS on the upper surface of the condyle in the non-deep bite group was consistent with the results of previous studies on mathematical simulation of TMJ loading. From the results of this study, it was suggested that the distribution of mechanical loading on the TMJ in the eccentric mandibular position would be highly affected by the comparative ratio of joint space. As the comparative ratio of joint space would be highly affected by the condylar position, the analysis of the morphology of the TMJ in relation to mechanical joint loading, in a future investigation, should be carried out on specific mandibular positions in relation to the function of the TMJ to be studied. © 2000 Blackwell Science Ltd.

    DOI: 10.1046/j.1365-2842.2000.00538.x

    Scopus

    PubMed

    researchmap

  • In situ microsampling technique for identification of elements of a restoration with exposed metal to identify potential allergens Reviewed

    Shogo Minagi, Takashi Sato, Kazuomi Suzuki, Goro Nishigawa, Shogo Minagi, Takashi Sato, Kazuomi Suzuki, Goro Nishigawa

    The Journal of Prosthetic Dentistry   82 ( 2 )   221 - 225   1999.8

     More details

    Authorship:Lead author   Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/s0022-3913(99)70160-5

    researchmap

  • New telescopic crown design for removable partial dentures Reviewed

    Minagi S, Natsuaki N, Nishigawa G, Sato T

    Journal of Prosthetic Dentistry   81 ( 6 )   684 - 688   1999.6

     More details

    Authorship:Lead author   Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • Relationship between anterior guidance and mesiodistal inclination of lower incisor in human subject with or without TMJ noise

    Shogo Minagi, Tetsuya Hara, Takashi Sato, Nobukuni Natsuaki, Yutaka Akamatsu

    Journal of Oral Rehabilitation   26 ( 10 )   781 - 785   1999

     More details

    Language:English   Publisher:Blackwell Publishing Ltd  

    The relationship between anterior guidance and the mesiodistal inclination of the lower incisors relative to the existence of temporomandibular joint (TMJ) noise was investigated. One hundred and thirty-four individuals, 21 to 40 years of age (mean age 23.8
    104 men and 30 women), were examined. A highly significant correlation was observed between the mean lower-incisor inclination and the difference in steepness between the right and left anterior guidances in the subject group showing TMJ noise (P &lt
    0.001), whereas no significant correlation was observed in the group without TMJ noise. © 1999 Blackwell Science Ltd.

    DOI: 10.1046/j.1365-2842.1999.00453.x

    Scopus

    PubMed

    researchmap

  • Relationship between mandibular position and the coordination of masseter muscle activity during sleep in humans Reviewed

    S. Minagi, Y. Akamatsu, T. Matsunaga, T. Sato

    Journal of Oral Rehabilitation   25 ( 12 )   902 - 907   1998.12

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publisher:Wiley  

    DOI: 10.1046/j.1365-2842.1998.00335.x

    researchmap

    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1365-2842.1998.00335.x

  • Double-casting method for fixed prosthodontics with functionally generated path

    Shogo Minagi, Toshiyuki Tanaka, Takashi Sato, Tadashi Matsunaga

    Journal of Prosthetic Dentistry   79 ( 2 )   120 - 124   1998.2

     More details

    Language:English  

    Statement of problem. The construction of precise fixed prostheses that are harmonious within the stomatognathic function has been regarded as a critical requirement for successful oral rehabilitation. However, techniques for construction have been unsuccessful in producing a prosthesis that can be inserted without intraoral occlusal adjustment. Purpose. In this study, a new method of constructing a precise prosthesis that requires limited occlusal adjustment at the final seating is described. Material and methods. The precision of this method was compared with a conventional method. Fourteen artificial crowns were fabricated on an experimental abutment by using both double-casting and conventional methods. The distances between the cusp tips and occlusal surfaces of the abutments, which were measured on wax/resin patterns and resultant crowns, were recorded to estimate clinical error for each method. Results. Error for the double-casting method was markedly less than the conventional method. This study demonstrated that a new double-casting method was precise and sufficiently reliable for clinical application. (J Prosthet Dent 1998
    79:120-24.). © 1998 Editorial Council of The Journal of Prosthetic Dentistry.

    DOI: 10.1016/S0022-3913(98)70203-3

    Scopus

    PubMed

    researchmap

  • Efficacy of tray adhesives for the adhesion of elastomer rubber impression materials to impression modeling plastics for border molding

    Goro Nishigawa, Takashi Sato, Kaori Suenaga, Shogo Minagi

    Journal of Prosthetic Dentistry   79 ( 2 )   140 - 144   1998.2

     More details

    Language:English  

    Statement of problem. Tray adhesive, which is used for the adhesion of elastomer rubber impression materials to a custom resin tray, lowers the retention of the impression materials to the impression modeling plastics, as some ingredients of tray adhesive make the impression modeling plastic soft and tacky. Purpose. The efficacy of tray adhesive, which is used for the adhesion of elastomer rubber impression materials to a custom resin tray, on the adhesion between elastomer rubber impression material and impression modeling plastic was investigated. Material and methods. Four silicone rubber impression materials (two addition reaction types and two condensation reaction types), two polysulfide rubber impression materials, and one impression modeling plastic were used in this study. Tensile strength between elastomer rubber impression material and impression modeling plastic with or without the application of tray adhesive was evaluated. Results. Although tray adhesives for both addition reaction type and both condensation reaction type of silicone impression materials and one tray adhesive for polysulfide rubber impression material increased the tensile strength between the impression material and impression modeling plastic, one tray adhesive for polysulfide rubber impression material decreased the tensile strength when sufficient drying time was not applied. (J Prosthet Dent 1998
    79:140-44.). CLINICAL IMPLICATIONS Inaccurate casts would result from lowered adhesive strength. The results of this study revealed that tray adhesive for addition reaction types and condensation reaction types of silicone rubber impression materials were effective regardless of the drying time. It also revealed that polysulfide rubber impression materials caused a contrary effect without sufficient drying time. © 1998 Editorial Council of The Journal of Prosthetic Dentistry.

    DOI: 10.1016/S0022-3913(98)70207-0

    Scopus

    PubMed

    researchmap

  • Efficacy of tray adhesives for the adhesion of elastomer rubber impression materials to impression modeling plastics for border molding

    Goro Nishigawa, Takashi Sato, Kaori Suenaga, Shogo Minagi

    Journal of Prosthetic Dentistry   79 ( 2 )   140 - 144   1998.2

     More details

    Language:English  

    Statement of problem. Tray adhesive, which is used for the adhesion of elastomer rubber impression materials to a custom resin tray, lowers the retention of the impression materials to the impression modeling plastics, as some ingredients of tray adhesive make the impression modeling plastic soft and tacky. Purpose. The efficacy of tray adhesive, which is used for the adhesion of elastomer rubber impression materials to a custom resin tray, on the adhesion between elastomer rubber impression material and impression modeling plastic was investigated. Material and methods. Four silicone rubber impression materials (two addition reaction types and two condensation reaction types), two polysulfide rubber impression materials, and one impression modeling plastic were used in this study. Tensile strength between elastomer rubber impression material and impression modeling plastic with or without the application of tray adhesive was evaluated. Results. Although tray adhesives for both addition reaction type and both condensation reaction type of silicone impression materials and one tray adhesive for polysulfide rubber impression material increased the tensile strength between the impression material and impression modeling plastic, one tray adhesive for polysulfide rubber impression material decreased the tensile strength when sufficient drying time was not applied. (J Prosthet Dent 1998
    79:140-44.). CLINICAL IMPLICATIONS Inaccurate casts would result from lowered adhesive strength. The results of this study revealed that tray adhesive for addition reaction types and condensation reaction types of silicone rubber impression materials were effective regardless of the drying time. It also revealed that polysulfide rubber impression materials caused a contrary effect without sufficient drying time. © 1998 Editorial Council of The Journal of Prosthetic Dentistry.

    DOI: 10.1016/S0022-3913(98)70207-0

    Scopus

    PubMed

    researchmap

  • Double-casting method for fixed prosthodontics with functionally generated path

    Shogo Minagi, Toshiyuki Tanaka, Takashi Sato, Tadashi Matsunaga

    Journal of Prosthetic Dentistry   79 ( 2 )   120 - 124   1998.2

     More details

    Language:English  

    Statement of problem. The construction of precise fixed prostheses that are harmonious within the stomatognathic function has been regarded as a critical requirement for successful oral rehabilitation. However, techniques for construction have been unsuccessful in producing a prosthesis that can be inserted without intraoral occlusal adjustment. Purpose. In this study, a new method of constructing a precise prosthesis that requires limited occlusal adjustment at the final seating is described. Material and methods. The precision of this method was compared with a conventional method. Fourteen artificial crowns were fabricated on an experimental abutment by using both double-casting and conventional methods. The distances between the cusp tips and occlusal surfaces of the abutments, which were measured on wax/resin patterns and resultant crowns, were recorded to estimate clinical error for each method. Results. Error for the double-casting method was markedly less than the conventional method. This study demonstrated that a new double-casting method was precise and sufficiently reliable for clinical application. (J Prosthet Dent 1998
    79:120-24.). © 1998 Editorial Council of The Journal of Prosthetic Dentistry.

    DOI: 10.1016/S0022-3913(98)70203-3

    Scopus

    PubMed

    researchmap

  • Threshold for bone resorption induced by continuous and intermittent pressure in the rat hard palate

    T. Sato, T. Hara, S. Mori, H. Shirai, S. Minagi

    Journal of Dental Research   77 ( 2 )   387 - 392   1998

     More details

    Language:English   Publisher:SAGE Publications Inc.  

    Osteoclastic bone resorption under the denture base has been considered to be influenced by mechanical force exerted through the denture base. However, no scientific evidence has been shown concerning whether osteoclastic bone resorption is a pressure-threshold-regulated phenomenon or merely a proportionally pressure-dependent phenomenon. In this study, a clear statistical criterion as an objective standard for the evaluation of histopathological bone resorption was established, and the relationship between the amount of continuous or intermittent compressive pressure exerted on the rat hard palate and induced osteoclastic bone resorption was studied based on this criterion. Eighty-five male rats of the Wistar strain, 15 weeks of age, were fitted with experimental dentures which were designed to exert a defined amount of continuous or intermittent compressive pressure on the intermolar region of the hard palate. No bone resorption was observed when continuous compressive pressure was ≤ 1.96 kPa or when intermittent compressive pressure was ≤ 9.8 kPa. In contrast, continuous compressive pressure ≥ 6.86 kPa or intermittent compressive pressure ≥ 19.6 kPa caused significant bone resorption in all rats studied. From these results, it was revealed that osteoclastic bone resorption under the denture base was a pressure-threshold-regulated phenomenon, and that the thresholds exist for the induction of bone resorption under the denture base by both continuous and intermittent compressive pressure, respectively. It was also clearly revealed from the results that the threshold for continuous compressive pressure is lower than that for intermittent compressive pressure.

    DOI: 10.1177/00220345980770020701

    Scopus