Postoperative functional remodeling of preoperative idiopathic condylar resorption: a case report.

摘要

Idiopathic condylar resorption (ICR) is a condition in which the condylar head of the mandible resorbs partially or completely, leading to alterations of facial morphology and occlusion of the jaw. The possible etiologies of ICR include overloading of the condyle, poor bone quality, and reduction of vascular supply to the condyle,but the etiology and pathogenesis of this condition remain poorly understood.ICR is observed after orthognathic surgeiy in patients with mandibular hypoplasia and a high mandib-ular plane angle. When ICR occurs, it induces several changes that can be seen on a cephalogram. In many cases the resorption occurs on the superoante-rior surface of the condylar head. As a result, the shortened rarmis height leads to decreased posterior facial height, clockwise mandibular rotation with an increased mandibular plane angle, and a decreased sella-nasion-B point angle.