Tabriz University of Medical Sciences Journal of Dental Research, Dental Clinics, Dental Prospects 2008-210X 4 3 2010 10 01 Temporomandibular Disorders: Knowledge, Attitude and Practice among Dentists in Tehran, Iran 90 94 EN Maryam Baharvand Majid Sedaghat Monfared Mina Hamian Elnaz Jalali Moghaddam Fatemeh Sadat Hossein Kaveh Alavi Journal Article 2010 02 08 2010 07 05 Background and aims. Temporomandibular disorders (TMD) account for the most common orofacial pains rising from musculoskeletal origin. The aim of this study was to investigate the level of knowledge, attitudes and practice of dental practitioners regarding TMD in Tehran, Iran. Materials and methods. A questionnaire, containing 29 questions on etiology, signs and symptoms, diagnosis and treatment of TMD, was given to 200 randomly selected general dental practitioners and specialists as well as 11 TMD experts. Results. An overall response rate of 97% was achieved among participants (mean age: 39 ± 8.2 years old; mean years in practice: 11.5 ± 7.4). The mean score of knowledge of TMD was found to be 10.85± 2.54 (of a total of 23). TMD specialists were significantly more knowledgeable than general dental practitioners (p<0.05). With respect to attitude, there was a significant difference among various age groups, and by increasing age and years in practice, the attitude towards TMD had weakened. However, no significant difference was recorded between general dental practitioners’ attitude and that of TMD experts towards TMD. There was a positive correlation between subjects’ knowledge and attitude (P= 0.007, r=0.138). Conclusion. According to the results, the level of knowledge and attitude of general dental practitioners of Tehran regarding TMD is not desirable. The majority are not willing to admit and treat TMD patients.