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口腔医学中心研究所1983～1989年接收在其他医院治疗失败的颌骨畸形患者18例,男10例,女8例,年龄18～35岁。以前曾手术1次者12例,2次者6例。下颌体部手术5例,升支部手术13例。均在术后6～12月畸形复发,有形成开(牙合)趋向。入院时患者主诉面形不匀称,咬断和咀嚼食物困难。客观检查:下颌颏部前突,面中部发育不足,颧部和眶下部平坦,鼻唇沟显著,下颌角外形不明显,颌下有术后瘢痕。有2例下颌角部骨缺损形成假关节。下颌体积增大。 回顾性分析和客观检查表明,患者在6～10岁时实行的正牙治疗未能消除牙颌畸形,未能恢复正确的上
Institute of Stomatology from 1983 to 1989 received 18 cases of jaw deformities failed in other hospitals, 10 males and 8 females, aged 18 to 35 years. In the past, there were 12 cases of surgery once and 6 cases of 2 times surgery. 5 cases of mandibular body surgery, ascending branch surgery in 13 cases. 6 to 12 months after deformity recurrence, there is a tendency to open (occlusion). Patients complained of irregular shape on admission, biting and chewing food difficulties. Objective examination: mandibular chin anterior process, the surface of the Ministry of underdevelopment, zygomatic and orbital flat, significant nasolabial fold, mandibular angle shape is not obvious, submandibular postoperative scar. There are 2 cases of mandibular angle bone defect to form pseudarthrosis. Increased mandibular volume. Retrospective analysis and objective examination showed that orthodontic treatment performed at 6 to 10 years of age failed to eliminate the dento-mandibular deformity and failed to recover correctly