正畸中加用自酸蚀窝沟封闭术的临床观察

A Comparison Study on Pit and Fissure Sealant Effects of Self-etching Adhesive in Orthdontic Treatment Patients

目的：探究正畸磨牙进行窝沟封闭术中加用自酸蚀剂后流体树脂的保留率和龋齿预防情况。方法选择78例年龄在10~15岁的正畸患者，共150颗健康下颌第一或第二恒磨牙，采用自身半口对照方法。随机选择一侧为试验组，磷酸酸蚀法加用自酸蚀粘接剂处理牙面后以流体树脂进行窝沟封闭；另一侧为对照组，单纯磷酸酸蚀法以流体树脂进行窝沟封闭。定期比较两种牙面窝沟处理方法封闭剂的保留率和龋病发生率，应用 SPSS12．0统计软件包对数据进行卡方检验。结果3个月复查时，经过统计学处理3个月时2组患牙的总脱落率差异无统计学意义（P 〉0．05）；6、12个月时2组患牙的总脱落率差异均有统计学意义（P 〈0．05）。结论在窝沟封闭中加用自酸蚀粘结剂可提高窝沟封闭剂的封闭效果，提高材料保留率，能有效预防年轻恒牙窝沟龋的发生。

Objective To evaluate the clinical effect of pit and fissure sealant on molar following orthdontic treatment with self-etching adhesive and phosphoric acid. Methods 150 health mandible the first or second molar in 78 orthdontic treatment patients aged from 10 to 15 years were divided into two groups：A and B. The split-mouth design was used in this study. Self-etching adhesive was used only in group A,and orthophosphoric acid was used in the two groups. The rate of the sealant reservation and the caries decreased were compared in two groups,and used SPSS 12. 0 software package for Chi-square test. Results The two group no statistical difference after 3 month. At 6,12 months,the retention rate of self-etching adhesive group was statistically lower than that of phosphoric acid group（P 〈0. 05）. Conclusion Self-etching adhesive can improve the retention rate of pit and fissure sealant.