Overcorrection in mandibular advancement.

Seven cases of class II skeletal deformities of the face are described in which overcorrection into a class III relationship was performed. This concept is based on the unpredictability of the relapse tendency on the one hand and the anterior inclination of the lower front teeth in some cases (which may block mandibular advancement significantly) on the other hand. Depending on the degree of the relapse occurring, postoperative orthodontic treatment, a second segmental operation or mere occlusal grinding is required.