不同稀释剂及其比例对封闭剂性能的影响

选用３Ｇ（二甲基丙烯酸二缩三乙二醇酯）、ＥＤＭＡ（甲基丙烯酸乙二醇酯）两种稀释剂，并设计４０％、５０％、５５％、６０％、７０％、８０％６种不同重量比例封闭剂配方，测定粘结性能（包括粘度值、渗透性、抗剪粘结强度）、机械性能（包括表面硬度、抗压强度、径向抗张强度）、吸水性和耐磨性。结果表明：３Ｇ作稀释剂优于ＥＤＭＡ，不同稀释剂比例（在４０％～６０％范围内）对封闭剂性能影响不大，总体评价，以４０％～５０％配方比例为最好。

Different kinds of diluent with different ratios affecting the characteristics of pit and fissue sealant

Two kinds of diluent were used:3G(triethyleneglycol dimethacrylate) and EDMA(ethyleneglycol dimethacrylate). 12 sealants were designed using each diluent with different ratios of 40%,50%, 55%, 60%, 70% and 80% of the weights of the sealants respectively. The characteristics test results indicated that, 3G is a better diluent than EDMA and that different ratios of diluent(ranging from 40% to 60% by the weight of the sealants) did not significantly affect the characteristics of the sealants. On the whole, the sealants with the ratios of diluent ranging from 40-50% are the best.