腭骨外侧缝牵张成骨关闭硬腭裂的长期效果和对颌面发育 …

目的 了解腭骨外侧缝牵张的长期效果和对颌面发育的影响。方法 采用头颅测量方法对经过腭骨外侧缝牵张的６只和正常对照８只Ｂｅａｇｌｅ犬进行观察和分析。结果 所有实验组犬两侧腭骨水平板均在中线形成骨性愈合。两组动物面长度和高度变量无明显差异，实验组面宽度，腭骨水平板宽度和垂反间距均小于对照组，差异具有显著性意义。结论 采用腭骨外侧缝牵张成骨的方法，能够使缺裂的腭骨板形成永久而完善的骨性修复；对在长度和高

Suture distraction osteogenesis for closure of cleft palate in the dog: long term effect and its influence on facial growth

Objective The purpose of the study was to evaluate the long term effect and its influence on facial growth of suture distraction osteogenesis for closure of cleft palate. Method 14 Beagle dogs were used in the study. Six of them were in the experimental group, eight served as the control. Direct measurements were taken on dry skulls of the dogs and the data were analysed statistically. Results The results showed that bony healing at the midline between the two horizontal portions of the palatine bones appeared in all the experimental dogs. There were no significant differences in the variables of facial length and height between the two groups. But the facial width and the distance between the two vertical portions of the palatine bones were significantly less in the experimental dogs than the control. Conclusions It is suggested that bony repair of the cleft could be accomplished permanently with the technique of sutural distraction. this technique had no influence on facial length and height growth, but could led to underdevelopment of the width of the face and the respiratory tract of the palatal portion.