不同树脂粘接剂用于IPS e.max CAD全瓷冠粘接强度及边缘微渗漏的研究

Effect of different resin adhesives on the bond strength and edge microleakage of IPS e.max CAD all-ceramic crown

目的:比较采用不同树脂粘接剂对IPS e.max CAD全瓷冠粘接强度及边缘微渗漏的影响。方法:共选取离体前磨牙63颗作为研究对象,常规制作IPS e.max CAD全瓷冠、抗剪切强度样本,按照树脂粘接剂的不同分为A组(21例)、B组(21例)、C组(21例),A组采用Duo-Link树脂粘接剂进行粘接,B组采用Variolink N树脂粘接剂进行粘接,C组采用Kerr NX3树脂粘接剂进行粘接,经过冷热循环、微渗透以及抗剪切强度实验,对3组的抗剪切强度和边缘微渗漏长度进行统计分析。结果:A、B、C 3组抗剪切强度比较差异有统计学意义(P<0.05);3组间两两比较差异无统计学意义(P>0.05)。边缘微渗漏等级中,3组只出现0~3级,A组多为0级,B组多为0级和1级,C组多为1级和2级,3组差异有统计学意义(P<0.05);其中,A组与B组、A组与C组、B组与C组差异有统计学意义(P<0.05)。结论:Duo-Link、Variolink N、Kerr NX3三种树脂粘接剂应用于IPS e.max CAD全瓷冠的粘接强度及边缘微渗漏各有差异,其中Kerr NX3树脂粘接剂的抗剪切强度最高,且边缘微渗漏程度最轻,有较好的粘接和良好的边缘。

Objective:To compare the effects of different resin binders on the bond strength and edge microleakage of IPS e.max CAD all-ceramic crowns.Methods:A total of 63 premolars were selected as the research objects.The IPS e.max CAD all-ceramic crowns and shear strength samples were routinely prepared,and divided into the A group(21 cases),B group(21 cases)and C group(21 cases)according to the different resin adhesives.The A group was bonded with Duo-Link resin adhesive,the B group was bonded with Variolink N resin adhesive,and the C group was bonded with Kerr NX3 resin binder.The shear strength and edge microleakage length among three groups were compared and analyzed using the hot and cold cycle,micro-osmosis and shear strength tests.Results:There was statistical significance in the shear strength among A,B and C groups(P<0.05).There was no statistical significance in pairwise comparisons between three groups(P>0.05).Among the marginal micro-leakage grades,the 0 to 3 grades in three groups were found,the grade 0 was mostly in A group,the grade 0 and grade 1 were mostly B group,and the grade 1 and grade 2 were mostly in C group.The difference between the three groups was statistically significant(P<0.05);The differences between A group and B group,A group and C group,and B group and C group were statistically significant(P<0.05).Conclusions:The bonding strength and edge microleakage of IPS e.max CAD all-ceramic crowns are different among the application of the Duo-Link,Variolink N and Kerr NX3.The cutting strength and edge micro-leakage of the application of Kerr NX3 are the highest and lightest,respectively,which has good bonding and good edges.