Abstract
Bone graft in clinical dentistry prevails in periodontal patients who have three wall infrabony defect around the tooth because of its pathological morphology. In this case report, bone graft on the labial bone surface of the lower incisors (mandibular symphysis) was applied as an auxiliary procedure at the same time of orthognathic surgery to a patient who had fenestrations and circumscribed holes without gingival recession and skeletal Class III malocclusion. The initial lateral cephalometric radiograph revealed a narrow and high symphysis, with an incisor position straight above the thin bone. During the pre-surgical orthodontic treatment, the incisors had been derotated and moved in the minimal labiolingual direction. Some fenestrations and circumscribed holes were found during orthognathic surgery. Through the bone allograft, the labial bone surface of the lower incisors (mandibular symphysis) with fenestrations and circumscribed holes were covered with the patient's cancellous bone. Consequently, a series of the lateral cephalometric radiographs revealed that the grafted bone was kept for four years and ten months after surgery with stable occlusion and no rotational relapse on the lower incisors where it is usually easy to relapse clinically.
