症型分類 (顎関節研究会提案) からみた顎関節症患者の臨床的検討

概要

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162 patients with TMJ arthrosis, who visited our clinic during two years from Dec. 1985 to Nov. 1987, were evaluated clinically according to a new classification proposed by Japanese Society of Temporomandibular Joint. The patients consisted of 44 males and 118 females (sex ratio: 1: 2.68), mean age was 35.0 years with 8 to 70year range. 1) The type distribution in our series was as follows; Type III was most commonly encountered (45.1%) followed by Type II (29.6%), Type IV (12.3%), Type I (10.5%), and Type V (0.6%). The majority of Type I, IV were females. 2) The mean age was higher in Type IV (55.0 years) and Type I (47.2 years) than Type III (28.7 years) and Type II (34.7 years). 3) The mean period before visiting our clinic was significantly shorter in Type I (6.8 months) than Type II (19.6 months), Type III (25.1 months) and Type IV (27.8 months). 4) The functional disturbance measured by dysfunction index was more severe in Type IV than other Type (I-III). 5) Effectiveness of standardized conservative treatment was reduced in the following order; Type I to Type IV. 6) In regard to complex type, it needs further study to determine its diagnostic criteria and application.
社団法人日本口腔外科学会の論文