髁突高位切除术对髁突肥大患者颞下颌关节功能的影响

目的 探讨髁突高位切除术对髁突肥大患者颞下颌关节功能的影响.方法 计算髁突肥大患者（共12例）的术前、术后颞下颌关节紊乱指数（CMI）,评价患者颞下颌关节功能的变化.结果 ①术后患者面型改善,X线检查显示术后患者双侧髁突形态及下颌升支高度基本对称髁突表面可见新骨皮质形成.②颞下颌关节功能改善,Fricton颞下颌功能障碍指数和颞下颌关节紊乱指数分别从治疗前的0.131和0.066下降到0.042和0.021（P＜0.05）.结论 髁突高位切除术在改善面型的同时亦可以有效改善髁突肥大导致的颞下颌关节功能紊乱.

Evaluation of temporomandibular joint function after condylectomy for condylar hyperplasia

OBJECTIVE: To investigate the temporomandibular joint (TMJ) function of the condylar hyperplasia patients after condylectomy. METHODS: Twelve patients with condylar hyperplasia were included in this study. Before and after condylectomy, they were examined and the Fricton' s Craniomandibular Index (CMI) was calculated to assess the functional disorder of TMJ. RESULTS: (1) The facial asymmetry was improved after condylectomy. The morphological symmetry of the bilateral condyle and ramus was displayed by X-ray examinations. There was new cortex formed on the surface of the operated condyle. (2) The TMJ function was improved in terms of Fricton's DI and CMI, which decreased from 0.131 and 0.066 to 0.042 and 0.021 respectively (P < 0.05). CONCLUSIONS: Condylectomy is an effective method to remedy facial asymmetry and, at the same time, improve the TMJ function of the condylar hyperplasia patients.