【摘要】 对1例因关节强直导致的偏颌畸形患者行下颌骨体牵张成骨器植入术，术后1周开始牵张右侧下颌骨，牵张20 d后右侧下颌升支及下颌体高度明显增加，牵张器维持4个月，右侧上颌骨自动向下生长，上下颌咬合关系恢复正常，取出下颌牵张成骨器，在牵张成骨新骨上植入MEDPOR假体并行颏成形术。手术完成后患者颜面不对称及畸形咬合关系均得到明显改善。
【关键词】 牵张成骨 关节强直 偏颌畸形
Distraction osteogenesis in correcting facial asymmetry malformation caused by temporomandibular joint ankylosis: A case report HU Wen-xu1, WANG Tao1, CHEN Meng-wei2, SONG Jin-lin2. （1. Dept. of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing 400015, China; 2. Dept. of Orthodontics, Affiliated Stomatological Hospital of Chongqing Medical University, Chongqing 400015, China）
[Abstract] A facial asymmetry patient caused by temporomandibular joint ankylosis was operated by putting a dis-traction osteogenesis（DO）-appliance. One week after surgery, the right mandible was distracted. Twenty days after distraction, the height of right mandibular ramus and body increased obviously. Four months after retain of DO-ap-pliance, the right maxilla down-grew automatically and the occluding relation recovered to normal. The DO-appli-ance was taken out. MEDPOR prosthesis was imbedded in new bone and genioplasty was operated. The facial asym-metry and abnormal occluding relation of the patient were improved obviously.
[Key words] distraction osteogenesis； temporomand
