A Case of Two-jaw Surgery for Skeletal Mandibular Protrusion that Became Maxillomandibular Edentulous

In Japan, the aging rate exceeds 25％ and a super-aging society has developed; the situation is expected to continue in the future. Not only adolescents but also middle-aged and/or elderly patients undergoing orthognathic surgery are gradually increasing. There are reports on orthognathic surgery for jaw deformity patients with multiple teeth defects, but no reports on two-jaw surgery in maxillomandibular edentulous patients in Japan. Although the present maxillomandibular edentulous patient was in their 30s, two-jaw surgery was performed to acquire stable occlusion, enable the use of stable dentures, and improve esthetics. A denture fitting the current alveolar ridge was created for surgical planning, then a duplicate denture in which the crown of the denture had been replaced with a contrast-enhanced resin was used. The patient wore the denture and an X-ray photograph was taken. This method made it possible to plan the amount of movement and intermaxillary fixation during surgery. In addition, the patient had a risk of dialysis, but there were no problems during the perioperative period. The patient was postoperatively very satisfied with the treatment outcome. It is the number of maxillomandibular edentulous cases in whom orthognathic surgery is applied will increase in the future.