A TMJ dysfunction questionnaire study of orthodontic patients

• Published in: Journal of the Japanese Society for the Temporomandibular Joint Vol. 8; no. 1; pp. 194 - 204
• Main Authors: KAWABATA, Shinichi, NAKAMURA, Junichi, AIHARA, Yoshinori, MORITA, Shuichi, YAMADA, Kazuhiro, HIRUMA, Yasuaki, KAWAHARA, Ichiro, HANADA, Kooji, MACHIDA, Naoki
• Format: Journal Article
• Language: English; Japanese
• Published: The Japanese Society for Temporomandibular Joint 1996; 一般社団法人 日本顎関節学会
• Subjects: malocclusion; orthognathic surgery; questionnaire; TMJ dysfunction; アンケート調査; 不正咬合; 顎変形症; 顎関節症
• ISSN: 0915-3004; 1884-4308
• DOI: 10.11246/gakukansetsu1989.8.194

The purpose of this study was the evaluation of TMJ dysfunction symptoms in orthodontic patients by questionnaires and study casts. Data was obtained from 258 orthodontic patients (97 males and 161 females) with a mean of 15.0 years, who visited the orthodontic clinic of Niigata University Hospital from 1991 to 1995. 172 (over 12 years old) of all 258 patients were divided into a general orthodontic patients group and an orthognathic surgery patients group with orofacial deformities. The results were as follows; (1) The incidence of TMJ dysfunction symptoms was 28.7% of the total sample, and no significant difference of incidence by sex were recognized. (2) Both joint noise and disturbance of jaw movement were found in 29.7%. (3) The incidence of TMJ dysfunction symptoms increased with age and was 60.7% in patients over 20 years old. (4) The questions about life environment and habits showed that there were 5% significant differences in unilateral mastication, trouble in mastication, trouble in mastication of hard food, stiff shoulder, inclined posture, and insomnia. (5) Over 12 years old, a significantly higher incidence of TMJ dysfunction symptoms was found in orthognathic surgery patients than in general orthodontic patients.