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.
ABSTRACT
Objective To study the self-locking brackets SmartclipTM 3MXTM MBTTM brackets and traditional pain comparison.Methods 72 patients with non-extraction orthodontic treatment were randomly divided into two groups,a group treated with self-locking brackets,the other group treated with traditional care slot.Patients in orthodontic treatment of pain within a week were inoestigated by way of a questionnaire survey,including orthodontic pain,soft tissue irritation,and the strength of a normal life for patients with the impact.Results Questionnaire response rate was 94.4％.The level of pain was similar in self-ligating bracket group and the traditional bracket group.However,time-related,including pain after orthodontic treatment was 3h,1 d time,the most intense pain and continued to 3d,back pain relief,1w about pain relief.Conclusion Self-locking brackets and brackets have noobvious pain intensity differences,but related with orthodontic force to the clinical use of force should pay attention to light.