自酸蚀黏结剂对恒牙窝沟封闭的疗效评价

目的观察自酸蚀黏结剂AdperTM和PromptTM涂布牙面后,窝沟封闭剂的1年随访保留率和龋降低率。方法选择62例6～14岁儿童、完全萌出的第一(或第二)恒磨牙156颗,采用自身对照方法,比较自酸蚀黏结剂涂布牙面后窝沟封闭(自酸蚀组)与磷酸酸蚀牙面后窝沟封闭(磷酸酸蚀组)的效果。治疗后随访3、6、12个月,应用SPSS12.0统计软件包对数据进行χ2检验及t检验。结果自酸蚀组封闭1颗牙的总操作时间为(122±13)s,较磷酸酸蚀组(219±13)s短(P<0.05)。自酸蚀组和磷酸酸蚀组封闭剂的3个月保留率分别为97.4%和96.2%,6个月保留率分别为94.9%和92.3%,12个月保留率分别为91.0%和88.4%;3个月时2组均未发现龋齿;6个月时磷酸酸蚀组发现1颗龋齿,自酸蚀组龋降低率为100%;12个月时自酸蚀组有3颗龋齿,磷酸酸蚀组有6颗龋齿,自酸蚀组龋降低率为50%。总龋齿发生率2组差异无统计学意义。结论应用自酸蚀黏结剂的窝沟封闭系统,可缩短临床操作时间;封闭剂保留率高,脱落率低,并可降低患儿依从性的要求。

Clinical effect of pit and fissure sealant used in combination with self-etching adhesive on permanent teeth

PURPOSE: To determine the role of pit and fissure sealant used in combination with self-etching adhesive in retention of the sealants and caries decrease of the permanent teeth. METHODS: Sixty two children aged 6-14 years old were chosen from the outpatients in the Department of Pediatric Dentistry, the first or the second permanent molars (n= 156) were sealed with two kinds of sealant. The tooth in one side was sealed with sealant (Concise, 3M-ESPE) and self-etching system (Adper and Prompt, 3M-ESPE) while the tooth in the other side was sealed with sealant (Concise, 3M-ESPE) and phosphate acid system. All the patients were followed up and reexamined 3, 6 and 12 months after treatment. Statistical analysis was carried out with SPSS 12.0 (SPSS Inc., Chicago, IL, USA) software package for Chi-square test and t test. RESULTS: The operating time using self-etching system was (122 +/- 13)s, shorter than (219 +/- 13)s using phosphate acid system (P < 0.05). The self-etching system used only one step to finish etching, adhesion and treatment of tooth surface, saving the steps of rinsing and drying. The retention rates of pit and fissure sealant in self-etching system and phosphate acid system were 97.4% and 96.2% respectively at the third month, 94.9% and 92.3% at the sixth month, 91.0% and 88.4% at the end of one year after treatment. The prevalence rate of caries in both groups had no significant difference (P>0.05); No caries in both groups were found in the first three months; In patients using self-etching system, caries decreased by 100% at the sixth month and by 50% at the end of one year. CONCLUSION: Adper Prompt self-etching adhesive, with an advantage of simple operation and shorter operation period, is effective in bonding sealant to the enamel. The retention rates of pit and fissure sealant were not different between the two groups.