Correction of Mandibular Prognathism in Combination with Polydiastema Using Rectangular Body Ostectomy: Literature Review and Case Report

Objective: Mandibular prognathism is inadaptability between skull and mandible and is one phenotype of class III malocculsion. Polydiastema may be present together with class III malocclusion. Skeletal class III malocclusion with mandibular prognathism can be diagnosed by cephalometric parameters. Study Design: A 22-year-old man complaining about difficult mastication and speech was referred to Department of Oral and Maxillofacial Surgery. According to the cephalometric analysis of the patient in sagittal plane, maxilla was 3 mm behind and mandible was 1 mm ahead from the skull base. During presurgical orthodontic treatment, polydiastema was treated in maxilla and mandible. Result and Conclusions: Skeletal class III malocclusion requires an orthognathic surgical procedure including some techniques. One of these techniques is mandibular body ostectomy, which is performed often as a surgical procedure for skeletal class III malocclusion. Instead of sagittal split osteomy, the technique of madibular body ostectomy could be performed as an alternative