上颌单颌拔牙矫治成人AngleⅡ^1错[牙][合]的硬软组织变化

目的：研究成人AngleⅡ类1分类错骀采用上颌单颌拔牙正畸治疗前后牙颌面硬软组织变化，评价临床疗效。方法：选择25例AngleⅡ类1分类错胎正畸患者，男11例，女14例，年龄16-28岁，平均18.08岁，上颌拔除第一前磨牙，采用直丝弓矫治技术和上颌强支抗进行矫治，应用X线头影测量技术对矫治前后硬软组织的变化进行测量，分析其测量结果。结果：25例AngleⅡ类1分类错骀成人患者，治疗完成后均达到理想的侧貌外形，磨牙为远中尖窝锁结关系，前牙覆牙]合]，覆盖正常，上切牙明显内收，下切牙位置基本不变或轻微唇倾，上下唇突度明显减小，鼻唇角增大。结论：成人AngleⅡ类1分类错骀患者经过单颌拔牙掩饰性治疗，面型明显改善，取得理想的矫治效果。

The Change of the Hard and Soft after Orthodontics Treatment of Adult Class Ⅱ Division 1 Malocclusion with Single Maxillary Extraction

Objective. To investigate hard and soft tissue changes and to evaluate the orthodontic effect with upper two first premolars extracted for adult class Ⅱ division 1 malocclusion. Methods：25 patients（11 males and 14 females）, aged 16-28 years,mean age 18.08 years, were treated by straight wire appliance with upper two first premolars extracted. The hard and soft tissue changes before and after treatment were investigated with eephalometrie analysis and data were analyzed by statistical methods. Results：The patients＇ profile was much improved and good occlusal intercuspation was also achieved, anterior overjet and overbite were normal, the upper incisor had a significant retraction and lower incisor position had no change or light labial inclination. The upper and lower lip retruded significantly and nasolabial angle increased. Conclusion： Obvious improvement of facial form can be achieved by orthodontic camouflage therapy in adult patient with class Ⅱ drvision 1 malocclusion.