Faculty Profiles - IIDA Seiji

Clinical observation of 146 cases of sports-related oral and maxillofacial fractures

Other Link： http://search.jamas.or.jp/link/ui/1998198548

IIDA Seiji, NOMURA Kimiko, SUGIURA Tsuyoshi, NAKASHIMA Masahiro, ADACHI Tadafumi, KOGO Mikihiko, MATSUYA Tokuzo

Journal of Oral Surgery Society of Japan 44 ( 10 ) 805 - 807 1998

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

In this study, we clinically observed 146 patients with sports-related oral and maxillofacial fractures treated at the First Department of Oral and Maxillofacial Surgery, Osaka University Faculty of Dentistry during the past 15 years. The results were as follows. Among 146 patients, 134 were male and 12 were female. Although 62.5% of the patients were 15 to 24 years of age, there was an annual trend toward a decrease in patients aged 15 to 19 years. The most common causative sport event was baseball (54 patients), followed by rugby football (26 patients) and soccer (15 patients). There was also a decrease in baseballrelated cases and an increase in soccer-related cases in recent years. Isolated mandibular fractures occurred in 92 patients, and the most common site was the mandibular angle, followed by the condyle and canine. Among 37 isolated midface fractures, the most common site was the zygomatic arch (14 patients). Baseball-related mandibular fractures had a high incidence of two-line fractures and fractures of the anterior portion of the mandibular body as compared with other events.

DOI： 10.5794/jjoms.44.805

New Surgical Procedure for Transverse Facial Cleft

Other Link： http://search.jamas.or.jp/link/ui/1999069467

IIDA Seiji, MATSUYA Tokuzo, KOGO Mikihiko, OKURA Masaya, FUJIMOTO Yoshiyuki, NAKAHARA Hirokazu

46 ( 4 ) 393 - 396 1997

Unilateral transverse facial cleft: A report of six cases

IIDA Seiji, KOGO Mikihiko, OKADA Gen, TANAKA Susumu, HIRANUMA Tsutomu, ISHIHAMA Kouji, TOMINAGA Gyou, TAKEDA Munehiro, MATSUYA Tokuzo

Journal of Oral Surgery Society of Japan 43 ( 4 ) 373 - 375 1997

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

We report six cases of unilateral transverse facial cleft. Five patients were male and one was female. One case was diagnosed as solitary macrostomia, and other cases had accessory ears. Among latter cases, one also suffered from microtia and was diagnosed as the first and second branchial syndrome. Another case was diagnosed as Goldenhar syndrome because of the presence of epibulbar dermoid. The other cases were diagnosed as the first branchial syndrome.

DOI： 10.5794/jjoms.43.373

A Case of Bilateral Parotid Sialolithiasis.

Other Link： http://search.jamas.or.jp/link/ui/1997193080

SAKAI Takayoshi, IIDA Seiji, TAKEDA Munehiro, NISHIMURA Norihiko, KIMURA Tetsuo

J.Jpn.Stomatol.Soc 46 ( 2 ) 187 - 190 1997

Language：Japanese Publisher：Japanese Stomatological Society

Sialolith usually occurs in the submandibular gland and its occurrence in the parotid gland is relatively rare. Especially the occurrence of sialoliths in the bilateral parotid gland is very rare and only three cases of such a case have been reported. In this paper, a case of sialolithiasis occurring in the bilateral parotid gland was reported. The patient, a 65-year-old Japanese male, visited our clinic complaining of swelling of the right buccal mucosa including the orifice of the parotid duct. Roentogen examination revealed the presense of sialoliths in the right parotid duct and the deep lobe of the left parotid gland. Extirpation of the sialoliths of the right parotid duct was performed under local anesthesia, and 6 sialoliths of 2 mm or less in diameter were observed. Though extirpation of the left sialolith was not performed because of lack of objective and subjective symptoms, long-term follow up is considered nessesary.

DOI： 10.11277/stomatology1952.46.187

Open reduction using a Martin-Eckelt^【〇!R】lag screw system for condylar process fractures

IIDA Seiji, NISHIMURA Norihiko, TAKEDA Munehiro, OKURA Masaya, HAMAGUCHI Munehiro, SAKAI Takayoshi, OKIMURA Makoto, KIMURA Tetsuo

Journal of Oral Surgery Society of Japan 43 ( 12 ) 927 - 929 1997

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

Eight patients with unilateral condylar fractures of the mandible who were treated at our clinic by Martin-Eckelt lag screw osteosynthesis are described. The patients were aged 14 to 78 years. There were 4 males and 4 females. Four patients had fractures of the base of the condylar process, and four had fractures of the condylar neck. Two patients had no dislocation, four had dislocation, and two had luxation. Clinical examinations 6 months after primary operation showed that mouth opening was not less than 40mm in any patient. Radiographic examinations revealed a correct position and normal form of the condylar head in six patients, but resorption of the condylar head was found in two patients. These two patients required extirpation of condylar head for reduction. Since the use of a lag screw decreases the supply of nutrients from the bone marrow of mandibular ramus to the condylar head, the condylar head should not be removed from the surrounding soft tissue during operation.

DOI： 10.5794/jjoms.43.927

Unified velopharyngoplasty for the management of recurrence of velopharyngeal incompetence after pharyngeal flap surgery

Other Link： http://search.jamas.or.jp/link/ui/1998090003

TACHIMURA Takashi, HARA Hisanaga, WADA Takeshi, IIDA Seiji, KOGO Mikihiko, MATSUYA Tokuzo

Journal of Oral Surgery Society of Japan 42 ( 3 ) 320 - 322 1996

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

Pharyngeal flap surgery is used in the prevention of hypernasality and the devel-opment of articulation disorders that are associated with velopharyngeal incompetence after primary palatal closure. However, surgery may result in failure when the level of the pharyngeal flap base is not determined properly with relation to that of velopharyngeal move-ment or when the flap shrinks because of scar contraction through prolonged exposure of its raw surface. This report describes one patient who had suffered from recurrence of velopharyngeal incompetence after pharyngeal flap surgery. Lateral cephalographic and nasopharyngeal fiberscopic examinations identified the cause of flap atrophy to be marked scar contraction, and the flap base was remarkably lower than the level of velopharyngeal closure in the patient. Unified velopharyngoplasty was newly performed on the basis of find-ings obtained from lateral cephalographic and nasopharyngeal fiberscopic examinations to correct the recurrence of velopharyngeal incompetence in the patient. One year postoperatively, complete closure of the velopharynx in coordination of the flap during speech was confirmed by nasopharyngeal fiberscopy.

DOI： 10.5794/jjoms.42.320

Two cases of calcifying epithelioma arising at the periauricular region

Other Link： http://search.jamas.or.jp/link/ui/1996193738

NISHIMURA Norihiko, IIDA Seiji, TAKEDA Munehiro, SAKAI Takayoshi, YAMAOKA Hitoo, KIMURA Tetsuo

Journal of Oral Surgery Society of Japan 42 ( 7 ) 693 - 695 1996

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

We reported two cases of calcifying epithelioma arising in subcutaneous tissue around the auricle. One case was in a 11-year-old Japanese girl who visited our clinic complaining of a mass at the left preauricular region, which had been present since the age of 3. Radiographic examination revealed the presence of calcification measuring 10×8 mm in diameter. Enucleation was performed, and a histopathological diagnosis of a calcifying epithelioma was made. Histopathologically, the tumor was composed mainly of shadow cells, and bone formation was also observed. The other case was in a 52-year old Japanese man, who visited our clinic complaining of a mass at the left side of the neck. The tumor was located at the subauricular region, and the surface of the tumor had undergone partial necrosis. The tumor was enucleated with the surrounding granulation tissue. The histopathological diagnosis was a calcifying epithelioma. Histopathological examination revealed the tumor to be composed of basophilic cells and shadow cells; calcifications were also observed. The postoperative course of both patients was uneventful, with no evidence of recurrence.

DOI： 10.5794/jjoms.42.693

Obstructive Sleep Apnea Syndrome Case Report Occurring after Primary Palatal Closure Operation

Other Link： http://search.jamas.or.jp/link/ui/1997075903

当科で入院加療を行った顎顔面骨骨折の臨床統計的観察(共著)

西村則彦 , 飯田征二 , 竹田宗弘 , 阪井丘芳 , 木村哲雄

大阪大学歯学雑誌 41 ( 1 ) 232 - 239 1996

HAMAGUCHI Munehiro, KOGO Mikihiko, IIDA Seiji, TAKEMURA Hitomi, ISHII Syoichiro, TANAKA Susumu, YASUI Yasunobu, MATSUYA Tokuzo

21 ( 3 ) 150 - 155 1996

A case of hemifacial microsomia with cleft palate

UCHIDA Yoshiyasu, IIDA Seiji, KOGO Mikihiko, OKADA Gen, TACHIMURA Takashi, MATSUYA Tokuzo

Journal of Oral Surgery Society of Japan 42 ( 4 ) 457 - 459 1996

Language：Japanese Publisher：Japanese Society of Oral and Maxillofacial Surgeons

Hemifacial microsomia is defined as a condition affecting primarily aural, oral, and mandibular development and its clinical features may vary. In this paper we report a case of hemifacial microsomia with cleft palate. A Japanese girl 8 months of age was referred to our clinic for the treatment of cleft palate. Clinically, she had hypoplasia and inferior displacement of the left auricle, stenosis of the external auditory canal, a hypoplastic mandible, and facial palsy at the left side of the lower lip. There was no significant asymmetry of the maxillary dental arch or soft palate, and the left side of the soft palate showed mild hypokinesia. Palatoplasty with a push-back method was performed under general anesthesis at the age of 1 year 5 months. A few reports have shown a trend toward velopharyngeal insufficiency in hemifacial microsomia due to hypoplastic palatal muscles and poor neural control of these muscles. In the future, comprehensive speech therapy will be required in this patient.

DOI： 10.5794/jjoms.42.457