含氟树脂封闭剂与玻璃离子封闭剂边缘微渗漏的体外研究

Marginal microleakage between fluoride-containing resin sealant and glass ionomer sealant in vitro

摘要:

目的：观察和比较含氟树脂封闭剂与玻璃离子封闭剂的边缘微渗漏情况。方法：将30个无龋新鲜拔出的人类第3磨牙随机分为3组，每组10个标本，分别用含氟树脂封闭剂（ClinproTM Sealant），玻璃离子封闭剂（Fuji Ⅸ GP）和传统树脂封闭剂（Concise）对牙齿面进行窝沟封闭，经125次热循环处理后，将所有标本浸泡于1%亚甲基蓝溶液中48 h，采用体视显微镜观察封闭剂边缘微渗漏情况。结果：染料渗透结果显示两实验组（ClinproTM Sealant组、Fuji Ⅸ GP组）与对照组（Concise组）材料边缘微渗漏比较，差异均无统计学意义（P >0.05）；两实验组比较，差异也无统计学意义（P >0.05）。结论：3种窝沟封闭材料均显示出较低的边缘微渗漏，并且玻璃离子水门汀Fuji Ⅸ GP具有与树脂类封闭剂相似的牙面密合度，封闭性能良好，将其作为窝沟封闭剂应用于临床值得推广。

Abstract:

Objective：To observe and compare the state of marginal microleakage between fluoride-containing resin sealant and glass ionomer sealant in vitro. Methods：Totally 30 newly extracted noncarious human the third molars were randomly divided into three groups with 10 samples in each group. The occlusional surfaces of the specimens were sealed with ClinproTM Sealant，Fuji Ⅸ GP and Concise，respectively. After 125 cycles of thermo-cycling，all specimens were immersed in 1% solution of methylene blue dye for 48 h then the microleakage of each specimen was measured under stereomicroscope. Results：Results of dye penetration revealed that there was no significant difference in microleakage among two test groups and control group（P >0.05） and there was no significant difference between two test groups（P >0.05），either. Conclusions：All three types of pit and fissure sealants showed lower microleakage. The tooth surface fitness of glass ionomer cement（Fuji Ⅸ GP） is comparatively similar to resin sealants，with satisfactory sealing ability. It’s worth promoting glass ionomer material as pit and fissure sealant in clinics.