摘要
目的 评价不同粘接剂对树脂水门汀和氧化锆粘接强度的影响.方法 选取方形等大氧化锆试件48块,抛光、喷砂、清洁,限定粘接面积后,使用不同粘接剂涂布,按照随机数表法分成3组:3M组、可乐丽组、皓齿组,每组各16块.3M组采用3M第八代通用型粘接剂,可乐丽组采用可乐丽通用型粘接剂,皓齿组采用皓齿通用型粘接剂.3M双固化树脂水门汀充填剂RelyX™ Ultimate圆柱形充填,充填完毕继续分为两个亚组,第一亚组在充填完成后,即老化前;另一亚组进行10 000次温度循环老化,即老化后,各8块,进行剪切强度测试,利用傅里叶红外光谱仪分别记录树脂粘接剂固化前后的红外光谱图,计算聚合转化率(DC),并进行统计学分析.结果 老化前,3M组与可乐丽组的粘接强度比较[(30.05±4.18)MPavs.(27.84±4.75)MPa],差异无统计学意义(P＞0.05),但3M组与可乐丽组的粘接强度均显著高于皓齿组[(19.35±3.41)MPa],差异均有统计学意义(P＜0.05).老化后,3M组与可乐丽组的粘接强度比较[(23.75±2.95)MPa vs.(20.57±3.06)MPa],差异无统计学意义(P＞0.05),但3M组与可乐丽组的粘接强度均显著高于皓齿组[(7.97±1.40)MPa],差异均有统计学意义(P＜0.05).老化后,3组粘接强度均下降,与老化前相比,差异均有统计学意义(P＜0.05).3M组与可乐丽组的DC比较[(53.12±9.14)％vs.(49.66±6.82)％],差异无统计学意义(P＞0.05),3M组与可乐丽组的DC均显著高于皓齿组[(40.18±5.54)％],差异均有统计学意义(P＜0.05).结论 两种含10-甲基丙烯酰氧癸二氢磷酸酯(10-MDP)粘接剂粘接后剪切强度较不含10-MDP粘接剂组高,且聚合转化好,不含10-MDP粘接剂在树脂水门汀和氧化锆粘接中粘接性较差.温度老化对各种粘接剂粘接后剪切强度均有影响,含10-MDP粘接剂较不含10-MDP粘接剂对老化敏感性弱.
Abstract
Objective To evaluate the effect of different adhesives on the bonding strength between resin cement and zirconia.Methods A total of 48 equal sized square zirconia specimens were selected,polished,sandblasted,cleaned,and the bonding areas were limited.They were randomly divided into three groups using by random number table method,with 16 in each group.The 3M group was given 3M eighth genera-tion universal adhesive,the Kuraray group was given Kuraray universal adhesive,and the Ultradent group was given Ultradent universal adhesive.Then filled as a cylinder with a 3M dual-cure resin cement RelyX™ Ultimate continued to be divided into two subgroups after filling.The first subgroup was after filling,i.e.before aging;the other subgroup underwent 10 000 temperature cycle aging,i.e.after aging,shear strength tests were conducted,with 8 in each group.Fourier infrared spectroscopy(FT-IR)was used to record the infrared spectra of the resin binder before and after curing,and the polymerization conversion rate(DC)was calculated,the data were statistically analyzed.Results Before aging,there was no statistically significant difference in the adhesive strength between the 3M group and the Kuraray group[(30.05±4.18)MPavs.(27.84±4.75)MPa](P＞0.05),however,the adhesive strength of the 3M group and the Kuraray group were significantly higher than that of the Ul-tradent group[(19.35±3.41)MPa],and the differences were statistically significant(P＜0.05).After aging,there was no statistically sig-nificant difference in the adhesive strength between the 3M group and the Kuraray group[(23.75±2.95)MPavs.(20.57±3.06)MPa](P＞0.05),but the adhesive strength of the 3 M group and the Kuraray group were significantly higher than that of the Ultradent group[(7.97±1.40)MPa],and the differences were statistically significant(P＜0.05).After aging,the adhesive strength of three groups were lower that those be-fore aging,and the differences were statistically significant(P＜0.05).There was no statistically significant difference in the DC between the 3M group and the Kuraray group[(53.12±9.14)％vs.49.66±6.82)％](P＞0.05);the DC of the 3M group and the Kuraray group were wsig-nificantly higher than that of the Ultradent group[(40.18±5.54)％],and the differences were statistically significant(P＜0.05).Conclusion The two MDP-containing adhesives showed higher shear strength and better polymerization transformation than the non 10-methacryloxy de-cyldihydrogen phosphate(10-MDP)containing adhesives.The non 10-MDP containing adhesives showed poor bond performance to resin ce-ment and zirconia.The shear strength of all adhesives was affected by aging.The adhesive with 10-MDP was less sensitive to aging than the adhe-sive without 10-MDP.
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