日本頭蓋顎顔面外科学会誌
Online ISSN : 2433-7838
Print ISSN : 0914-594X
症例
上下顎移動術を用いた時計方向回転により整容的改善を行った前歯部正被蓋を呈する下顎前突顔貌の2例
鶴田 仁史奥本 隆行宮本 純平
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2023 年 39 巻 4 号 p. 90-106

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  The correction of jaw deformities usually requires orthognathic surgery, aimed at achieving good function and favorable esthetic aesthetic results. This study aimed to report on the efficacy of clockwise rotation of the maxillomandibular complex for correcting a protruding chin in skeletal class III malformations with a brachyfacial profile and positive overjet, using bimaxillary surgery. Two patients underwent clockwise rotation of the maxillomandibular complex through a surgical procedure consisting of a Le Fort I maxillary osteotomy and bilateral sagittal split ramus osteotomy (BSSO). The first patient was a 29-year-old male who received this orthognathic surgery without prior orthodontic treatment. Two L-shaped absorbent plates were used for Le Fort I osteotomy fixation, and titanium wires were used for BSSO loose fixation. The second patient was a 23-year-old female who underwent preoperative orthodontic treatment followed by orthognathic surgery and postoperative orthodontic treatment. Two L-shaped titanium plates were used for Le Fort I osteotomy fixation, and two I-shaped titanium plates were used for BSSO fixation. Additionally, the patient underwent bilateral mandibular angle osteotomies to reduce the prominent angle. Clockwise rotation of the maxillomandibular complex provided satisfying facial esthetic results, with a mesofacial profile and normal chin.

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