摘要
Abstract
BACKGROUND:Self-locking brackets changed the traditional ligation mode and obviously elevated the sliding mechanism of the teeth and the effect of its spreading during orthodontic treatment, and effectively decreased friction force. OBJECTIVE:To explore the differences of the application of 3M self-locking bracket and traditional straight wire bracket during orthodontic treatment. METHODS:A total of 796 patients receiving orthodontic correction of mild and moderate misaligned teeth, including 398 males and 400 females, at the age of 11-19 years old. 398 patients received 3M SmartClipTM self-ligating bracket braces as observation group. The remaining 398 patients received MBT straight wire appliance. The width of molars, intercanine width, superior anterior tooth convexity and correction were compared between the two groups. RESULTS AND CONCLUSION:The width of premolars and superior anterior tooth convexity were significantly better after correction than that before correction in both groups (P<0.05). Moreover, the correction outcomes were significantly better in the observation group than in the control group (P<0.05). No significant difference in the width of first molar and intercanine width was detected before and after treatment in either group, as wel as between the two groups. Aligned dentition time and the total therapeutic duration were shorter in the observation group than in the control group (P<0.05). These findings indicate that compared with the traditional MBT straight wire bracket braces, expansion arch effect of the 3M SmartClipTM self-ligating bracket braces is obvious;clinical treatment can reduce the rate of extraction cases, and shorten the course of correction.关键词
生物材料/口腔生物材料/自锁托槽/直丝弓托槽/正畸矫正/临床效果Key words
Orthodontic Appliances/Dental Arch/Malocclusion, Angle Class I分类
医药卫生
