شيوع عوامل ايجاد كننده اختلا در مفصل گيجگاهي فكي در 100 بيمار مراجعه كننده به بخش اكلوژن دانشكده دندان پزشكي مشهد

Aim: Some factors can affect T.M.J. In this survey, prevalence of etiologic factors such as trauma, dental premature contacts, parafunctional habits and psychologic factors was studied. Methods & Materials: 100 patients who had T.M.D and referred to Mashhad Dental School was examined. For each patient a questionnaire was provided and etiologic factors evaluated. Results: The most of patients were affected by pscychologic factors (77%). The next lateral eccentric premature contacts were higher than others (71%). Followed by clenching (38%), Bruxism (21%) and Trauma to T.M.1 or chin Conclusion: The most important etiologic factor of TMD was psychologic followed by lateral eccentric premature contacts.