Registration and Measurement of Right and Left Mediotrusion by using the Method of Electronic Axiography

PURPOSE. The aim of this study was to register and measure lower jaw movements and to analyse the measured length of maximal right and left mediotrusion movement in asymptomatic and symptomatic subjects. MATERIALS AND METHODS. A symptomatic group consisted of 51 subjects with temporomandibular disorders. A control group consisted of 43 subjects without signs and symptoms of temporomandibular joint disorders. In the symptomatic group of subjects signs and symptoms of temporomandibular disorders were crepitation, bruxism, sensitivity, pain in the temporomandibular joint and muscles, as well as pain and sensitivity in the region surround and anterior to the ear, together with difficulties while opening the mouth. Each subject was registered by the GAMMA CADIAX system for registration of positions and movement of the lower jaw, which consist of a convetional SAM axiograph, electronic device for drawing of curves with a computer. RESULTS. No significant differences were found between the groups of subject for the measured variables. CONCLUSION. The results of the length of the mandibular and condyle movements are important, alhough unreliable indicators of temporomandibular join function. Description analysis of a graphic recording of mandibular and TMJ movement remains a precise evaluation method for determination of TMJ dysfunction