2021/12/23 更新

写真a

スギモト ヒカル
杉本 皓
SUGIMOTO Hikaru
所属
医歯薬学域 助教
職名
助教
外部リンク

研究キーワード

  • 咀嚼

研究分野

  • ライフサイエンス / 補綴系歯学

学歴

  • 岡山大学大学院   医歯薬学総合研究科   咬合・有床義歯補綴学分野

    2016年4月 - 2020年3月

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経歴

  • 岡山大学学術研究院医歯薬学域   咬合・有床義歯補綴学分野   助教

    2021年4月 - 現在

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所属学協会

 

論文

  • Effects of food particle loss on the evaluation of masticatory ability using image analysis.

    Hikaru Sugimoto, Yuki Tanaka, Naoki Kodama, Shogo Minagi

    Journal of prosthodontic research   2021年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    PURPOSE: To examine how particle loss affects the evaluation of masticatory ability using the image analysis method. METHODS: The subjects were divided into two groups:Y-group (healthy young adults: 10 male, 10 female; mean age 27.6 ± 1.9 years), and D-group (denture wearing older adults: 13 male, 9 female; mean age, 75.1 ± 5.3 years). Raw carrots, peanuts, and a combined test food from 5 daily food materials (mixed foods) were selected as test foods. Images of the boluses were captured and processed after the subjects freely masticated the test foods until the point of swallowing or completed half strokes of total chewing cycles. The median particle size (X50) was calculated from the data for each particle. We compared X50 calculated from all particles obtained from the masticatory bolus (as X50N) with the X50 of only selectively larger particles (as X50R). RESULTS: Significant correlations were observed between X50N and X50R (p < 0.01) determined in almost all masticatory conditions. In particular, for particle sizes of 2 mm or more, the correlation coefficient between X50N and X50R was notably strong (r > 0.75). CONCLUSION: The method of analyzing only larger particles makes it possible to evaluate masticatory ability without losing the characteristics of the original particle size distribution of the entire bolus. This finding can be applied for the evaluation of masticatory ability, especially among older adults who have difficulty retrieving the total amount of test food due to decreased activities of daily living.

    DOI: 10.2186/jpr.JPR_D_21_00069

    PubMed

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  • Differences in comminution progress during mastication in healthy dentate and denture-wearing elderly people

    Hikaru Sugimoto, Yuki Tanaka, Naoki Kodama, Shogo Minagi

    JOURNAL OF PROSTHODONTIC RESEARCH   64 ( 3 )   257 - 263   2020年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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

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  • Effects of stage II transport and food bolus sampling methods on the properties of food particles 国際誌

    Yuki Tanaka, Hikaru Sugimoto, Naoki Kodama, Shogo Minagi

    JOURNAL OF ORAL REHABILITATION   47 ( 2 )   196 - 203   2020年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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

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  • Short-Term Crossover Study on the Effect of Orthogonalized Deep-Grooved Posterior Artificial Teeth on the Masticatory Efficiency of Complete Denture Wearers. 国際誌

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

    The open dentistry journal   12   255 - 264   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    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<.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<.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

    PubMed

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書籍等出版物

  • はじめての部分床義歯

    松田, 謙一

    医歯薬出版  2021年10月 

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    総ページ数:196p   記述言語:日本語

    CiNii Books

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MISC

  • はじめての部分床義歯 Chapter 3 概形印象採得

    杉本皓, 兒玉直紀

    歯界展望   2021年

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  • 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 )   2018年

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  • 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 )   2018年

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  • 半調節性咬合器の使用方法に関する新規シミュレーター実習

    原 哲也, 荒木 大介, 山田 知枝, 宋本 儒享, 徳善 貴大, 杉本 皓, 兒玉 直紀, 皆木 省吾

    日本補綴歯科学会誌   9 ( 特別号 )   277 - 277   2017年6月

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    記述言語:日本語   出版者・発行元:(公社)日本補綴歯科学会  

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講演・口頭発表等

  • 持続的な味刺激による唾液分泌量の経時的変化に関する研究

    山田蘭子, 杉本皓, 田中祐貴, 北川佳祐, 古寺寛志, 足立れいみ, 小室奈央, 谷地開, 才本大稀, 桑原実穂, 萬田陽介, 兒玉直紀, 吉田竜介, 皆木省吾

    日本顎口腔機能学会第66回学術大会  2021年12月4日 

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    開催年月日: 2021年12月4日 - 2021年12月5日

    会議種別:口頭発表(一般)  

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  • Effects of food particle loss on the evaluation of masticatory ability using image analysis.

    7th Biennial Joint Congress of JPS-CPS-KAP  2021年2月19日 

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    開催年月日: 2021年2月19日 - 2021年2月27日

    記述言語:英語   会議種別:ポスター発表  

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  • 食塊粒度解析から判明した義歯装着高齢の咀嚼の特徴

    杉本 晧, 田中祐貴, 兒玉直紀, 皆木省吾

    第39回岡山歯学会学術集会  2018年10月21日 

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    開催年月日: 2018年10月21日

    会議種別:口頭発表(一般)  

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  • 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

    第29回日本咀嚼学会学術大会  2018年10月13日 

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    開催年月日: 2018年10月13日 - 2018年10月14日

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  • 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

    第28回日本咀嚼学会学術大会  2017年9月23日 

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    開催年月日: 2017年9月23日 - 2017年9月24日

    会議種別:口頭発表(一般)  

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受賞

  • 7th Biennial Joint Congress of JPS-CPS-KAP The Best Poster Awards

    2021年2月  

    H. Sugimoto, Y. Tanaka, K. Kitagawa, H. Furutera, N. Kodama, S. Minagi

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  • 第29回日本咀嚼学会学術大会優秀口演賞

    2018年10月   日本咀嚼学会   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

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共同研究・競争的資金等の研究

  • AIによる画像解析技術を応用した新規咀嚼能力評価システムの構築

    研究課題/領域番号:21K17041  2021年04月 - 2024年03月

    日本学術振興会  科学研究費助成事業 若手研究  若手研究

    杉本 皓

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    配分額:4680000円 ( 直接経費:3600000円 、 間接経費:1080000円 )

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