上颌前牵引对单侧完全性唇腭裂术后患者软组织侧貌的影响

目的:探讨上颌前牵引对UCLP术后患者软组织侧貌的影响。方法:选用10例生长期UCLP术后患者进行上颌前牵引。采用X线头影测量分析法,对前牵引前后的软组织侧貌变化进行定量分析。结果:前牵引后鼻尖点、鼻底点及上唇最突点明显前移,软组织面型凸度明显增加,治疗前的凹面型侧貌明显改善。结论:上颌前牵引是改正唇腭裂患者颜面畸形的一种有效方法。

Changes of Soft Tissue Profile in Operated Unilateral Cleft Lip and Palate Patients after MaLxillary Protraction

OBJECTIVE: The aim of this study is to investigate effects of maxillary protraction on soft tissue profile in operated operated unilateral cleft lip and palate (UCLP) patients. METHODS: A total of 10 growing UCLP patients (male 7, female 3), age from 8.2 to 12 years old (Average: 10.4 years old), were selected to be treated with maxillary protraction using head gear-chin cap-long hook protraction appliance. The appliance was worn 12-14 hours per day, and the protraction force was 400-500 g each side. The protraction direction was forward and slightly downward. The treatment period was 4.7 months (Average: 5.8 months). Cephalometrics were taken before and after treatment. The changes of soft-tissue profile were studied using the computer-aid X-ray cephalometric analysis. RESULTS: After protraction, the points of Prn, Sn and Ls moved forward significantly. The distance from points Ls to E plane changed significantly from 0.46 mm before treatment to 1.18 mm after treatment. The angle G-Prn-Pg' decreased significantly, and G-Sn-Pg' changed significantly from -0.30 before treatment to 6.260 after treatment. The anterior-posterior position of mandible and lower lip did not change significantly, the changes of angles Cm-Sn-Ls, A'ls/SiLi had no statistical significance. The results indicated that maxillary protraction could make maxilla and upper lip move forward, and the convexity of soft tissue profile improve significantly. CONCLUSION: Maxillary protraction is an effective way to improve the facial deformity of operated UCLP patients. UCLP patients should have early interrupted treatment.