顔面骨骨折観血整復時に下顎後退術を併用し咬合改善をはかった下顎前突症の1例

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A twenty-year-old woman was admitted to our hospital after being involved in a traffic accident. She sustained multiple mandibular fractures on the right condyle, the right coronoid process and the left canine region, and furthermore sustained a right maxillary Le Fort I type fracture and a right zygomatic bone fracture. Before her traffic accident, she had been recommended by her dentist to consult our hospilal about her class III malocclusion.<BR>A plan of surgical treatment was made using her upper and lower dental plaster casts completed before the injury by her dentist. The maxillary fracture was reduced manually before surgery. Open reduction was only performed on the fractures of the canine region of the mandible and the right zygomatic bone. The mandible was set-back by sagittal split osteotomy of the left mandibular ramus with the utilization of the right condyle fracture.