Relocation of the mandibular monocortical segment for reconstruction of a defect of the mandibular angle.

s a w t s a t r T l r l T e o m p r w T andibular angle ostectomy is widely used to correct promient mandibular angles or to reduce the width of the lower ace in Asians who have a brachycephalic features.1–3 Its omplications include condylar fracture, severe bleeding, ransient injury to the facial nerve, trismus, asymmetry as result of undercorrection or overcorrection, and formation f a secondary angle.4 Using the intraoral approach with narow surgical fields, it is difficult to cut the mandibular angle ccurately and symmetrically according to surgical plans. emoval of too much bone can result in a poor aesthetic utcome with depression and asymmetry at the gonial angle Fig. 1). The treatments for an overcorrected mandibular angle are utogenous iliac bone graft, augmentation with alloplastic aterial, or correction of depressed soft tissue with fat grafts t the gonial angle. In addition to donor site morbidity, 5 utogenous iliac bone grafts are resorbed postoperatively, hich lead to irregular margins and underaugmentation at the onial angle. In augmentation with alloplastic material, the pper part of the material should overlap the buccal surface of he ascending ramus for fixation, which will result in excesive lateral prominence. Patients usually prefer autogenous one to alloplastic materials.