We report a case of adult mandibular prognathism with missing maxillomandibular molar teeth.
A 46-year-old man had mandibular protrusion with maxillomandibular molars lost due to periodontal disease and dental caries. After 5months of preoperative orthodontic treatment, a sagittal split ramus osteotomy was performed using bite plates to stabilize the molar occlusion.
The amount of setback was 6.5mm on the right side and 4.0mm on the left. After the surgery, the mandibular prognathism improved. After performing orthodontic treatment, the molar occlusion was reconstructed with an implant prosthesis. It has been almost 2years since the surgical treatment and there has been no significant relapse and the occlusion has remained stable. We think that malocclusion with jaw deformity is one of the risk factors for collapse of the occlusion. In patients with multiple missing teeth, we should consider both prosthodontic treatment and comprehensive dental therapy, including surgical orthodontic treatment.
