摘要
目的初步探讨单纯前方牵引矫治器治疗骨性Ⅲ类错[牙合]的软组织、硬组织的改变。方法选择17名骨性前牙反[牙合]的患者，男9名，女8名，年龄7～12岁，平均年龄9．8岁，平均疗程13．4月，未进行扩弓直接应用前方牵引矫治器进行治疗。术前术后拍头颅侧位片，测量17名患者治疗前后软硬组织的改变。头影测量采用Dentalvision软件，记录软硬组织的变化。结果上颌骨前移1．8mm，差别具有显著性差异，上前牙唇倾4．2度，差别有显著性差异，上前牙前移3．4mm，差别有显著性差异。下颌骨后退4．1mm，差别具有显著性差异，下切牙后退3．9mm，差别具有显著性差异。软组织的改变：上唇突、下唇突、面型角、上唇-审美距、下唇-审美距、鼻点-H线、下唇-H线、颏沟点-H线的距离均向正常值靠拢，差别具有显著性差异，提示患者的面型更加协调。结论单纯前方牵引矫治器治疗骨性Ⅲ类错[牙合]也能达到较好的效果，使患者的软硬组织得到明显改善。
Objective To evaluate the change of hard and soft tissue in patients with skeletal anterior cross bite treated with protraction headgear appliance. Method 17 patients aged from 7-12 years（mean 9. 8 years） with skeletal anterior cross bite were selected. Cephalometric amalysis was performed before and after orthodontic therapy. Dental vision software was used to analyze changes. Result Significant differences were found in A-OLp, B-OLp, U1-OLp, L1-OLp, ULP, LLP, FCA, UL-E, LL-E, N-H, Sn-H, LL-H, Si-H. Conclusion Protraction headgear appliance was effective and it could give patients a more harmony profile.
出处
《中华口腔正畸学杂志》
2009年第4期211-214,共4页
Chinese Journal of Orthodontics
