抄録
The patient was a 17-year-8-month-old female with Skeletal Class Ⅱ, high angle, and large overjet due to the posterior position of the mandible. Her left condyle was deformed. Temporomandibular joint disorder with deformation of the left condyle was observed, so to reduce the risk of postoperative mandibular condyle resorption, we did not perform mandibular osteotomy to move the mandible forward but performed a surgical orthodontic treatment using a combination of anterior-posterior two segment Le Fort I osteotomy and genioplasty. After treatment, a good lateral appearance and appropriate overjet and overbite were obtained, and the patient has a stable occlusion 2 years and 6 months after the start of retention.
