唇腭裂患者Lefort I型前移术后软硬组织的相关性研究

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0.67。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。

Correlation between the Clanges of Soft and Hard Tissue after Advanced Lefort I Osteotomy in Patients with Cleft Lip and Palate

Objective The purpose is to evaluate the correlation between the changes of soft and hard tissue after advanced Lefort I osteotomy in patients with complete unilateral cleft lip and palate. Method Lateral cephalometric films were taken from before and after operation. The same landmarks in two films were compared horizontally and vertically. The correlation ratio between changes of soft and hard tissue were analysed statistically. Results After operation, the length of upper lip of the patients with CLP increased. The ratio between the movement of upper incisor and upper lip was 0.77 horizontally and 0.67 vertically, respectively. Conclusion The slope between hard and soft tissue was treated as ratio. It is more significant than the horizontal difference between soft and hard tissue, since correlative factor was contained in the slope. [