若年発症顎関節症の臨床研究　　一般集団における顎関節症状に関する検討

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  • Clinical studies on TMJ arthrosis in young people. An epidemiological assessment of TMJ disorder in students by a questionnaire.
  • An epidemiological assessment of TMJ disorder in students by a questionnaire
  • 一般集団における顎関節症状に関する検討

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In order to do an epidemiological investigation of temporomandibular joint disorder, 612 students of a junior high school and a high school in Nagoya city were investigated by a questionnaire. The results were as follows:<BR>1. Frequencies of complaints of temporomandibular joint sound were 12.1%. No significant difference was found in age and sex distributions.(P>0.1)<BR>2. 3.7% of junior high school students and 7.9% of high school students complained of more than two complex symptoms (P<0.05), which were typical symptoms of TMJ arthrosis, TMJ sound, pain and limitation.<BR>3. For the initial onset of disorder, 55.2% of the total samples indicated that the disorder was manifest in junior high school students. This result suggested the association between complaints of TMJ disorder and dental stage IVA (Hellman's classification).<BR>4. The association between complaints of TMJ disorder and feeding, bruxism and chewing on one side were P<0.05 (in girls), P<0.001 (total), P<0.05 (in boys), respectively.<BR>5. The results suggested that further extention of the sample is necessary to investigate the etiology of TMJ disorder.

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