Dyract flow流动复合体用于预防性树脂充填的疗效观察

Effect of Dyract flow compomer for preventive resin restoration therapy:a clinical observation

目的观察Dyract flow流动复合体用于预防性树脂充填(PRR)的临床疗效。方法试验组应用Dyract flow流动复合体充填年轻恒牙窝沟龋损并封闭其余窝沟;对照组应用光固化复合树脂充填龋洞,其余窝沟用窝沟封闭剂封闭。结果试验组治疗后6个月和1年的封闭剂完全保留率分别为100.0%和94.8%,对照组分别为95.5%和87.7%,两组问差异均无统计学意义(P值均>0.05);2年后,试验组和对照组的封闭剂完全保留率分别为88.3%和77.2%,差异有统计学意义(P<0.05)。试验组和对照组在6个月、1年时的龋病发生率均为0;2年后试验组为0,对照组为1.98%;两组间的差异均无统计学意义(P值均>0.05)。结论Dyract flow流动复合体足一种良好的PRR材料,在PRR治疗中可作为传统充填方法的补充,值得推广应用。

Objective To observe the clinical effect of Dyract flow compomer for preventive resin restoration （PRR） therapy. Methods Eighty children （aged 6-10 years） with occlusal pit-and-fissure caries involving the bilateral first permanent molars were enrolled in this study. In each patient, the caries in the molar on one side was filled and the other pits were sealed with Dyract flow compomer （test group）, while the contralateral molar was repaired using photosensitized resin with the other pits sealed with routine sealants. The patients were followed up for 2 years to observe the therapeutic effects of the treatments. Results The sealant retention rates in the test group 6 months and 1 year after caries filling were 100% and 94.8%, respectively, similar to the rates in the control group （95.5% and 87.7%, P 〉 0.05） ; two years after the filling, the retention rates in the test and control groups were 88.3% and 77.2%, respectively （P〈 0.05）. The dental caries prevalence rates in half an year, 1 year, and 2 years were all 0 in the test group, showing no significant difference compared with the rates in the control group （0, 0, and 1.98%, respectively, P 〉 0.05）. Conclusion Dyract flow compomer is effective for preventive resin restoration therapy and offers an alternative for the conventional filling materials for caries repair. （Shanghai Med J, 2007, 30：911-913）