摘要
目的:观察不同酸蚀方法对氟斑牙粘结托槽的脱落率的影响,筛选一种降低氟斑牙托槽脱落率的临床可行的酸蚀方法。方法:选择14例中度氟斑牙患者的226颗牙齿为研究对象,按左右分为28个区,随机分为4组(每组7个区):分别为酸蚀1min组(n=56)、酸蚀2min组(n=57)、酸蚀3min组(n=57)和酸蚀2次组(n=56),记录第4、8和12周托槽脱落率和托槽脱落后牙面上残留的粘接剂残留指数(ARI)。结果:酸蚀2次组和酸蚀2min组的托槽脱落率明显低于酸蚀1min组和3min组(P<0.05);ARI高于酸蚀1min组和3min组(P<0.05)。酸蚀2次组的托槽脱落率低于酸蚀2min组,但差异无统计学意义(P>0.05);ARI高于酸蚀2min组,但差异亦无统计学意义(P>0.05)。各组前磨牙脱落率均明显高于前牙(P<0.05),酸蚀2次组的前磨牙脱落率低于其他各组(P<0.05)。结论:酸蚀2min能明显降低氟斑牙托槽脱落率,2次酸蚀比1次酸蚀托槽脱落率降低,尤其是前磨牙托槽脱落率明显降低。
Objective To observe the losing ratio of the bond orthodontic brackets in fluorotic teeth by using different etching methods and find a way to decrease the losing ratio of the bond orthodontic brackets in fluorotic teeth.Methods 226 midrange fluorotic teeth from 14 patients were chosen.The teech were divided into 28 sections according to the direction.Then the 28 sections were randomly divided into four groups： etching 1 min group（n=56）,etching 2 min group（n=57）,etching 3 min group（n=57） and etching twice group（n=56）.The losing ratios of brackets and adhesive remnant index（ARI）were observed after 4,8 and 12 weeks.Results The losing ratios of brackets in etching 2 min group and etching twice group were lower than those in etching 1 min group and etching 3 min group（P〈0.05）.The ARI in etching 2 min group and etching twice group were higher than those in the other two groups（P〈0.05）.The losing ratio of brackets in etching twice group was lower than that in etching 2 min group,but there was no significant difference between two groups（P〉0.05）.The ARI in etching twice group was higher than that in etching 2 min group,but there was no significant difference between two groups（P〉0.05）.The losing ratio of brackets on bicuspid teeth were higher than those on front teeth in each group.The losing ratio of brackets on bicuspid teeth in etching twice group was lower than those in the other groups（P〈0.05）.Conclusion Etching 2 min can reduce the losing ratio of the bond orthodontic brackets in fluorotic teeth.The losing ratio of the bond orthodontic brackets in etching twice group is lower than that in etching once group,especially on bicuspid teeth.
出处
《吉林大学学报（医学版）》
CAS
CSCD
北大核心
2011年第2期319-322,共4页
Journal of Jilin University：Medicine Edition
基金
吉林省卫生厅科研基金资助课题(2009Z006)
关键词
氟中毒
牙酸蚀
脱落率
粘结剂残留指数
fluorosis； dental acid etching； losing ratio； adhesive remnant index；
