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目的 评价单侧完全性唇腭裂患者LefortI型截骨前移术前后软硬组织的相关改变。方法 计算 15例患者手术前后X线头颅侧位定位片上相同测量点在水平和垂直轴上的差值 ,再以相关软硬组织间的散点斜度作为软硬组织比值。结果 术后患者上唇长度延长 ,软组织上唇突点对上中切牙点在水平和垂直轴上的移动比值分别为0 .77和 0 .6 7。结论 应用软硬组织间的散点的斜度作为比值 ,比一般同一平面间的水平移动更具有临床意义 ,因为其中包含了相关关系因素。
Objective To evaluate the changes of soft and hard tissue before and after LefortI osteotomy in patients with unilateral complete cleft lip and palate. Methods The difference between the horizontal and vertical axes of the same measurement points on the X-ray cephalometric slices of 15 patients before and after surgery was calculated. The ratio of the soft-hard tissue between the soft and hard tissues was used as the slope. Results The length of the upper lip of the patient was prolonged. The ratio of the upper lip of the soft tissue to that of the upper incisors was 0.77 and 0.67, respectively. Conclusions The slope of the scatter between the soft and hard tissues is more important than the horizontal shift of the same plane because it contains the related factors.