Associação da sintomatologia clínica da ATM frente ao deslocamento, função, posição do disco e excursão condilar

Abstract

Temporomandibular jointcan be affected by musculoskeletal disorders, which result in temporomandibular joint dysfunction characterized by signs and symptoms such as oral-facial pain, clicks, crackles, among others. Temporomandibular jointinternal derangement causes such symptoms and it is generally characterized by disc displacement followed by disc- condyle irregular relation, jaw- temple‟s articular componentsjoint morphological changes, as well as effusion and degenerative changes in that joint. This study aims to evaluate the association between displacement, function, disc position and condylar excursion in jaw- temple joint symptomatology by using magnetic resonance imaging. The sample consisted of 140 jaw-temple joints.Displacement, function and disc position were analyzed.Clock hours and condylar excursion were used as criterion. There were used bivariate and multivariate logistic regressions for statistical analysis, in order to verify those variables association with the following signs and symptoms: presence of pain, clicks, crackles, jerky and mouth opening limitation. Results showed positive association between displacement with reduction andhypoexcursion with pain (p = 0.05), between displacement with reduction and clicks (p = 0.05), between disc position lower than 10 hours, displacement without reducing and hypoexcursion with irregular movement and opening limitation (p <0.05). It was also observed that only the lower position than 10 hours showed a correlation with symptoms, suggesting normal position comprising the range of 10 hours to 1 hour. Displacements with and without reduction showed associations with some signs and symptoms as regards disc function.About condylar excursion, only hypoexcursion was associated with symptoms.It was concluded that there was association of temporomandibular jointdisordersymptoms with disc function and position, as well as with condylar excursion.