• Cheng Liang, Xing Wang, Biao Yi, Zi-Li Li, and Xiao-Xia Wang.
• Department of Oral and Maxillofacial Surgery, Peking University School & Hospital of Stomatology, Beijing 100081, China. chliang0719@sina.com.cn
• Beijing Da Xue Xue Bao. 2007 Feb 18; 39 (1): 33-6.

ObjectiveTo observe the clinical results in correction of unilateral temporomandibular joint(TMJ) ankylosis accompanying with mandibular micrognathia using internal distraction osteogenesis simultaneously.MethodsSeven adult patients of unilateral TMJ ankylosis accompanying with mandibular micrognathia (13 sides of mandibular body) were treated simultaneously with internal distraction osteogenesis. Obstructive sleep apnea and hypopnea syndrome(OSAHS) was diagnosed in all patients preoperatively. The treatment includes distraction osteogenesis of mandibular body and transport distraction osteogenesis for TMJ arthroplasty at the same time. Distraction was started on the 6th to 8th day after operation. The distraction rhythm and rate was one mm a day operated in 4 separate times. The patients underwent active mouth opening postoperatively. Distractors were kept in place for 3-5 months after completion of distraction and then removed. Mean distraction distance of the 13 sides of mandibular body was 17.1mm(ranged from 14 to 20 mm) and that of the 7 sides of TMJ was 16.4mm(ranged from 15 to 20mm).ResultsAfter treatment, micrognathia of the 7 patients was corrected. OSAHS was cured in 6 patients. The mean range of mouth opening was increased from 8.1 mm to 39.9 mm and bone formation in the distraction gaps was observed. The mean following-up period was 34.3 months(ranged from 18 to 51 months). No recurrence of TMJ ankylosis or micrognathia was occurred.ConclusionUnilateral TMJ ankylosis accompanying with micrognathia and OSAHS can be treated effectively by distraction osteogenesis simultaneously. The operation is simple with low risk. The course of treatment can be simplified and the operation times can be reduced.

23 keywords...

hide…