Diagnostic Value of Static Functional Tests in Patients with Temporomandibular Disorders

Aims& Objectives: The goal of this study was to determine the diagnostic value of the static functional tests to induce pain in the masticatory muscles in patients with myogenic temporomandibular disorders (TMD). Materials& Methods: The study involved 39 patients ranging from 38 to 59 years of age (averaging 45.6 years). The results of the static tests to induce pain were recorded in a dichotomous scale. In order to create an isometric contraction in the tested muscles pressure was applied on the patients lower jaw in a specific direction, while they were asked to hold the jaw immobile in an open, lateral or protrusive position (static tests). Results: Data analysis showed that there was a statistically significant difference (p0.05) in the incidence of the invoked muscle pain using the methods of extraoral palpation (maximum movement limitation) versus functional manipulation. Conclusions: The static functional tests allow assessment of the muscles that are inaccessible to direct palpation due to their topographical location. The static functional test methods may be useful in diagnosing some temporomandibular disorders.