Author/Authors :
Daneshvar-Mozafari, Avideh , Ebrahimi, Masoumeh Dental Research Center - Mashhad University of Medical Sciences, Mashhad , Dashti, Hossein Dental Research Center - Mashhad University of Medical Sciences, Mashhad , Mehrabkhani, Maryam Dental Research Center - Mashhad University of Medical Sciences, Mashhad , Arghavani, Mohammad
Abstract :
Background and aims. Temporomandibular disorders (TMDs) are the most common condition affecting the tem-poromandibular joint and associated structures. The aim of this study was the epidemiologic evaluation of TMDs and re-lated factors in a group of Iranian adolescents.
Materials and methods. This descriptive cross-sectional survey included a sample of800 high school students (400 girls and 400 boys) aged 14 to18 years, in Mashhad, Iran, selected using cluster sampling. Examiners completed question-naires and performed the clinical examinations. Data were analyzed with the Chi-square and Fisher exact tests.
Results. The prevalence of TMDs in the studied sample was 34.7%. The most common signs of TMDs were clicking, muscle tenderness and TMJ tenderness. The most prevalent predisposing factors of TMDs were clenching, premature con-tact in protrusive movement and bruxism. A clear predominance was seen in girls (40.5%) compared with boys (29%) (P = 0.001).
Conclusion. Signs and symptoms of TMDs were prevalent in Iranian adolescents with a clear female predominance.
