应用免冲洗酸蚀剂的窝沟封闭系统临床效果观察

The clinical observation of pit and fissure sealant used in combination with non-rinse conditioner on permanent teeth

目的 观察应用免冲洗酸蚀的窝沟封闭系统在临床应用的保留率和龋齿减少率。方法 选择儿童口腔门诊 6～ 14岁儿童的完全萌出的第一或第二恒磨牙 ,由一位医师采用自身对照法进行窝沟封闭。术后 3、6、12月复查。共复查 38人 136颗牙齿。并应用扫描电镜观察封闭后的离体牙封闭情况。结果 12月时免冲洗酸蚀组的完全保留率低于磷酸酸蚀组 ,脱落率高于磷酸酸蚀组 ,有统计学差异。免冲洗酸蚀组发现 2例龋齿 ,磷酸酸蚀组4例龋齿 ,免冲洗酸蚀组龋齿减少率为 5 0 %。结论 复查一年后 ,应用免冲洗酸蚀的窝沟封闭系统 ,封闭剂保留率较低 ,脱落率较高。

Objective To observe the retention and caries decrease of pit and fissure sealant used in combination with non-rinse conditioner on permanent teeth.Methods 136 first or second permanent molars in 38 children aged 6～14 years old were sealed with sealant.The oral cavity was divided into two sites.The teeth in every site of the patient were randomly assigned to receive either Dyract seal with non-rinse conditioner system or Concise with phosphate acid system.Follow-up examinations were conducted after 3,6 and 12 months.Results At 12 month, the full sealant retention in non-rinse conditioner system were lower than that in phosphate acid conditioner system,the loss of sealant in non-rinse conditioner system were higher than that in the other group. There was significant difference in the two groups.The caries decrease rate in sealant in non-rinse conditioner system was 50% after 12 month.Conclusion The retention of sealant with non-rinse conditioner system was poorer. The caries prevalence in the two groups should be observed for a long time.