不同处理方法对颊面管再粘结脱落率的影响

Comparison of expulsion rate of rebonded buccal tubes treated with different methods

目的:比较不同处理方法对颊管再粘结脱落率的影响。方法:选择正在接受正畸治疗、上颌第一磨牙颊管首次脱落的患者150例(共186个脱落颊管),随机分为三组,每组各50例。A组:更换新颊管;B组:采用喷砂法去除底面残胶;C组:采用磨除法去除底面残胶。统计3个月内托槽再次脱落情况。结果:三组颊管再次脱落率无显著性差异(P>0.05)。结论:颊管脱落后采用喷砂法或磨除法处理底板残留粘结剂,可获得与更换颊管相近的粘结效果。

Objective To compare expulsion rate of rebonded buccal tubes between three kinds of adhesive removal method. Methods 150 orthodontic patients（186 buccal tubes） with maxillary first molar buccal tube off,who were undergoing orthodontic treatment,were randomly divided into three groups,with 50 individuals each. Adhesive removal of buccal tubes was done by replacing,sand blasting and grinding division respectively. Statistics within three months bracketed shedding rates again. Results No significant difference of shedding rates were observed in different groups（P〉0.05）. Conclusion If the rebounded buccal falls off,There appears similar effect of adhesion in the first two methods and the last.