Orthodontic and Prosthetic Approach in Patients with Angle Class II Division 2 Accompanied by CMD Symptoms

Abstract

Prior to occlusal treatment in a 22-year-old famale with Angle class II division 2 accompanied by congenital missing teeth, mandibular movements were measured using a computerized axiograph system (CADIAX system) . The measurement showed anterior displacement of the articular disc of the left temporomandibular joint during mouth opening and closing. Therefore, the 3.0 mm anterior position immediately before displacement of the disc during mouth closing was designated as the therapeutic position. Using this position as the treatment goal, the occlusion was improved by orthodontic and prosthetic approaches. After application of the final prosthesis, mandibular move-ments were examined again using a CADIAX system. During mouth opening, no waves suggesting anterior displacement of the articular disc were observed, and relatively smooth movements suggesting harmony in the neuromuscular system were confirmed.