Changes in joint space dimension after the correction of Class II division 1 XXXX .

@entity3232 @entity1 @entity2956 @entity1348
UNASSIGNED: Summary OBJECTIVE: The aim of this prospective longitudinal investigation was to compare the relationship between the @entity1348 ( @entity1348 ) condyles and the temporal fossae by means of tomography before and after the orthodontic correction of Class II, division 1 @entity3232 using the activator appliance. MATERIALS AND METHODS: The final sample consisted of 26 consecutively treated Class II, division 1 @entity1 (19 @entity1 and 7 @entity1 with an average pre-treatment age of 11 years) who underwent orthodontic treatment by means of an activator appliance. Before treatment all @entity1 were free of signs and symptoms associated to @entity2956 . Bilateral tomographic records before and after treatment were taken and analyzed. Outlines of the condyle and temporal fossa were automatically determined by an edge-detection protocol, and the minimum joint space dimension was automatically measured every 2 degrees. For further analysis, the joint space was divided into anterior, superior, and posterior joint spaces. RESULTS: The average treatment time with the activator appliance was 366 days. In all subjects, activator treatment resulted in a Class I dental arch relationship. After activator treatment, no differences were found in the joint space measurements in any direction. Comparisons between the right and left condyles were not significantly different. CONCLUSIONS: Joint space dimension in Class II division I @entity1 was similar before and after treatment in both TMJs.
