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目的:通过X线头影测量学的比较性研究,探讨腭裂手术对颌骨发育的影响。方法:利用计算机X线头影测量与医学统计分析法比较正常（牙合）成人、单侧完全腭裂修复组以及未修复组成人患者颌骨形态学的异同点。结果:与正常（牙合）成人相比,手术与非手术组成人腭裂患者的上颌骨在前后向及垂直向均存在发育不足;手术组腭裂患者的ANB角、上颌深度角、下颌平面角、以及前颅底-下颌体长度比与非手术组患者之间差异存在显著性（P≤0.01）。结论:无论接受或未接受腭裂修复术的成人患者均存在上颌骨发育不足,腭裂修复术可加重上颌牙槽突前后向的发育不足,下颌牙槽突的代偿性后缩可导致腭裂患者的假性颏前突。
OBJECTIVE: To investigate the effect of cleft palate surgery on the development of mandible through the comparative study of X-cephalometry. Methods: To compare the differences of jaw morphology between normal occlusion patients, unilateral complete cleft palate repair group and uncomplicated adult patients by computerized cephalometric analysis and medical statistical analysis. Results: Compared with the normal (occlusion) adults, the maxillary bone of the cleft palate patients in both operation and non-operation groups had underdeveloped anteroposterior and vertical directions. The ANB angle, maxillary depth angle, mandibular plane angle, As well as the ratio of anterior cranial base-mandibular body length to non-surgical patients (P≤0.01). Conclusion: All patients with or without cleft palate repair have maxillary hypoplasia, cleft palate repair may aggravate the anterior and posterior maxillary alveolar protrusion, mandibular alveolar compensatory retraction can lead to cleft palate patients Pseudo genioplasty.