上颌单颌拔牙矫治安氏Ⅱ类1分类错的效果分析  

The Study of Treatment Angle's Class Ⅱ Division Ⅰ Malocclusion with the Single Maxillary Extraction Orthodontics

作　　者：庞兰[1] 潘虹海[1] 王洁丽[1] 谭宇[1] 杨四维[1] 

机构地区：[1]泸州医学院附属口腔医院正畸科,四川泸州646000

出　　处：《华西医学》2009年第9期2244-2246,共3页West China Medical Journal

摘　　要：目的:探讨上颌单颌拔牙矫治的的临床效果、适应症。方法:选择18例安氏II类1分类错患者采用上颌单颌拔牙模式矫治,对矫治前后X线头影测量数据进行对比分析。结果:①U1-SN增加4.84°,L1-MP增加2.78°,前牙覆盖减少4.06 mm,覆减少3.39 mm,上唇突度减小1.39 mm、鼻唇角增大3.06°,Z角增大3.22°。②18例患者矫治后侧貌明显改善,前牙覆覆盖关系正常,磨牙呈完全远中关系,尖牙为中性关系。结论:上颌单颌拔牙模式适用于下唇突度小的轻度拥挤的轻度骨性和牙源性的Ⅱ类1分类错。Objective：To investigate the effect and indication of single maxillary extraction orthodontics for thetreatment of patients with Angle Class II division I malocclusion.Methods：eighteen patients with Angle Class II division I malocclusion were treated by single maxillary extraction orthodontics.The cephalometric analysis before and after treatment were performed and the data statistically analyzed.Results：After treatment,① the angle U1-SN had increased by 4.84 degrees and the angle L1-MP had increased 2.78 degrees.Z angle had increased by 3.22°;The upper lip and upper incisor were retracted obviously by 1.39mm and 4.06mm respectively.② The profile of the 18 patients were significantly improved.The relationship Was toatally distal between the molars and neutral between the canines.The anterior overjet and overbite Was norma1.Conclusion：Single maxillary extraction orthodontics is suitabale for class II division I patients with less labial tipping of lower incisors and less lower lip protrusion.

关 键 词：安氏II类1分类错 上颌单颌拔牙 头影测量 

分 类 号：R783.5[医药卫生—口腔医学]