酸蚀时间对临床托槽脱落率的影响  

THE INFLUENCE OF DIFFERENT ETCH TIMES ON THE FAILURE RATES OF DIRECTLY BONDED BRACKETS

作　　者：冶录平 罗颂椒[2] 白静[3] 

机构地区：[1]大连市口腔医院,116021 [2]四川大学华西口腔医学院,610041 [3]鞍钢铁东医院,114000

出　　处：《北京口腔医学》2003年第2期101-103,共3页Beijing Journal of Stomatology

摘　　要：目的 :比较 15秒和 6 0秒酸蚀后临床托槽脱落率的差异 ,从而探讨正畸临床适宜的牙釉质酸处理时间。方法 :选择年龄为 11- 16岁的正畸患者 30名 ,随机分为两组 ,两组患者按不同牙位分别进行两种时间的酸蚀。酸蚀后常规粘结方丝托槽 ,每次复诊时分别记录两组托槽脱落数 ,连续记录三个月。结果 :15秒酸蚀组总脱落率为 7 777% ,6 0秒酸蚀组总脱落率为 3 333% ,前牙托槽脱落数明显少于后牙 ,最易脱落的托槽为第二前磨牙。结论 :建议正畸临床上粘结前牙可使用 15秒的酸蚀时间。Objective:To investigate the most appropriate etching time in orthodontic treatment,by comparing the clinical failure rates of bracket bonded at 15 seconds and 60 seconds etching.Methods:A total of 540 bonds were studied over a period of 3 months.Results:There were statistical differences between 15 seconds and 60 seconds etching.15 seconds etching failure rates was higher than that of 60 seconds etching,15 seconds etching failure rates was only 7 777%,Furthermore,the failure area was most frequently seen in second premolar.Conclusion:15 seconds etching time can be adopted for anterior tooth in routine clinical use.

关 键 词：酸蚀时间 正畸治疗 牙釉质 第二前磨牙 临床托槽 脱落率 

分 类 号：R783[医药卫生—口腔医学]