The stability of the lower labial segment following surgical correction of Class III skeletal discrepancy.

There has been some controversy over the post-operative changes that may take place in tooth position following orthognathic surgery. The present study was designed to observe the changes that take place in the position of the incisors following surgery to correct class III skeletal discrepancies. It was found that the postoperative changes that occur in the axial inclination of the lower incisors are small enough to be clinically insignificant, provided an adequate overbite has been established. Any changes that do occur will probably be associated with a small increase in the mandibular maxillary planes angle, with possibly some upper incisor proclination and reduction of overbite.