三种粘接材料对氧化锆与牙本质粘接强度的研究

Study on the shear strength between zirconia and dentin with three kinds of adhesive materials

目的:研究3种不同粘接材料对氧化锆与牙本质粘接强度的影响。方法:制作60件氧化锆试件,随机分成3组(n=20),分别用树脂加强型玻璃离子水门汀、AZ-Prime联合Duo-Link树脂水门汀、BeautiCem SA树脂水门汀将氧化锆与牙本质进行粘接,依次记为A组、B组、C组,各组随机选取10件置于37℃恒温水浴箱24 h,记为老化前;10件置于37℃恒温水浴箱6个月用来检测粘接耐久性,记为老化后,测试粘接剪切强度,分析粘接界面断裂模式。结果:老化前,A组剪切强度小于B组、C组(P<0.05);B组与C组剪切强度无明显差异(P>0.05)。老化后,3组间剪切强度差异具有统计学意义,A组剪切强度最低,B组次之,C组最高(P<0.05)。老化前后相比,各组的粘接剪切强度均明显降低(P<0.05)。结论:BeautiCem SA树脂水门汀能获得较高的粘接剪切强度和粘接耐久性,满足临床需要。

Objective:To study the shear bond strength(SBS)between zirconia and dentin with three kinds of adhesive materials.Methods:Sixty zirconia ceremics were prepared and evenly divided into 3 groups, the zirconia ceremics of each group were bonded to detin respectively using resin-reinforcedglass ionomer, AZ-Prime combined with Duo-Link resin cement, and BeautiCem SA resin cement, which were respectively recorded as group A,group B,and group C.And 10 pieces were randomly selected in each group and placed in 37℃ constant temperature water bath for one day, which were recorded as before aging.Ten pieces were placed in same temperature water bath for 6 months to test the bonding durability, recorded as aging.The SBS values were tested and the fracture modes of the adhensive interface were analyzed.Results:Before aging, the shear bond strength of group A was lower than that of group B,group C(P<0.05).There was no significant difference in the shear bond strength between group B and group C(P>0.05).There were statistically significant differences in the shear bond strength among the there groups after aging, group A was the lowest, followed by group B,and group C was the highest(P<0.05).The shear bond strength of all groups decreased significantly after aging compared to before aging(P<0.05).Conclusion:BeautiCem SA resin cement can achieve high SBS and durability, meeting clinical needs.