摘要
目的 应用PASS矫治器（生理性支抗Spee氏弓矫治器）对安氏Ⅱ1错（牙合）进行矫治,观察其临床效果.方法 选取20例安氏Ⅱ1错（牙合）畸形患者,拔除4个第一双尖牙,应用PASS矫治器进行矫治,对治疗前后头影测量项目进行统计学分析.结果 20例患者平均疗程16.22.2月.矫治后ANB角减小0.99°,U1-SN角减小16.06,U1-L1角增加14.60,U1-NA减小7.13 mm,L1-NB减小2.01 mm,前牙覆（牙合）和覆盖分别减小了1.99 mm和6.88 mm,以上测量项目变化有统计学意义.结论 应用PASS矫治器对安氏Ⅱ1错（牙合）畸形矫治能得到很好的矫治效果.
Objective To observe the clinical effects of PASS appliance （Physiclogic Anchorage Control appliance） in the treatment of Glass II division 1 patients. Methods 20 patients with Class II division 1 malocclusion were extracted 4 first premolars and treated with PASS appliance. Cephalometric analysis was carried out before and after treatment. Results The average treatment time was 16.2 months. After treatment, ANB angle, U1-SN, U1-NA , L1-NB, overbite and overjet decreased by 0. 99°, 16. 06°, 7. 13 mm, 2. 01 mm, 1. 99 mm and 6. 88 rnm, respectivelt. U1-L1 increased by 14. 6°. Significant difference was found in all measurements before and after treatment. Conclusions PASS appliance could be effectively used in the treatment of Class Ⅱ 1 patients.
出处
《中华口腔正畸学杂志》
2015年第2期96-99,共4页
Chinese Journal of Orthodontics
