A Method for Intraoral Removal of Exostoses at the Mandibular Angle

Abstract

For surgical correction of excessive transverse facial width in patients with masseter muscle hypertrophy or bony projection at the mandibular angle, we reported a technique for intraoral removal of bony exostoses at the mandibular angle. By our method, one block of the bony exostosis, which is extremely difficult to remove intraorally, can be removed easily and safely without damage to the inferior alveolar neurovascular bundle and surrounding tissue.
Our method is as follows.
A laminectomy bur is used to cut through the lateral cortical plate of the ramus on the line connecting suitable points on the posterior border of the ramus and the preangular notch. Next, a splitting chisel is directed and driven inward to the osteotomy line. Since the angle of mandible almost consists of mostly cortical bone and the medial cortical plate is thin, a triangle of the bone segment can be separated at the bone marrow and extirpated.