利用Tip-Edge第一期矫治技术非拔牙矫治安氏Ⅱ类1分类错的临床研究  

Clinical Study of Non-extraction Treatment to Class II Division I by Tip-Edge 1st Stage Mechanics

作　　者：何欣[1] 张栋梁[1] 李梦华[1] 

机构地区：[1]首都医科大学附属北京口腔医院正畸科(王府井部),北京100006

出　　处：《口腔医学研究》2009年第1期93-95,共3页Journal of Oral Science Research

摘　　要：目的:应用Tip-Edge I期矫治技术对治疗非拔牙安氏Ⅱ类1分类错进行矫治,并对矫治机理进行探讨。方法:临床筛选病例12例。矫治前后拍摄头颅侧位定位片,并对相关指标进行模型测量。治疗前后相关头影测量项目测量值输入计算机,用SAS软件包对各测量值进行配对t检验。结果:Tip-Edge I期矫治结束后,上颌切牙倾斜(U1-SN,U1-Apog)明显减小,而下颌切牙的倾斜明显增加(P<0.01)覆牙合超显著减小。上颌第一磨牙远中移动1.5 mm,远中直立3.5°,有显著性差别。模型测量分析表明上颌尖牙间宽度和磨牙宽度显著增加。下颌尖牙间的宽度无显著变化。下颌磨牙宽度显著增加。结论:利用Tip-Edge I期技术能够非拔牙矫治处于生长发育期的安氏Ⅱ类1分类错。对处于生长发育期具有良好生长型(水平生长型)和生长潜力的患者较易取得良好的效果。Objective ： To treat Class II division I malocclusion by Tip - Edge 1 st Stage technique and explore the treatment mechanics. Methods： 12 cases were selected, including 7 males and 5 females with the average age of 12.5 years old. Cephalometric analysis and model studies were made before and after treatment. Paired t test was employed for the statistical analysis with SAS software. Result： Cephalometric analysis showed that, after Tip - Edge 1 st stage treatment, U1 - SN and U1 - Apog index were reduced significantly（ P 〈 0.01 ）. Lower incisor protrude significantly（ P 〈 0.01 ）, with overlap and overbite reduced significantly（P 〈 0.01 ）. Upper 1st molars were distally moved about 1.5mm（P 〈0.05）, and Uptight distally with 3.5 degree（P 〈 0.01 ）. Model study showed that the width between upper canines and the width between upper 1st molars increased significantly（P 〈 0.01 ）. There was no significant change at the width between lower canines, but significant increase at the width between lower molars （ P 〈 0.05 ）. Conclusion： Class II division I malocclusion could be treated without extraction by Tip - Edge 1 st stage technique. Growth pattern determined the stability of the treatment of Class II.

关 键 词：TIP-EDGE 非拔牙矫治 安氏Ⅱ类1分类 

分 类 号：R783.5[医药卫生—口腔医学]