【摘要】 目的比较Duo-Link、Variolink N和Kerr NX3三种树脂粘接剂粘接对离体牙IPS e.max CAD全瓷冠微渗漏和适合性的影响。方法收集40个离体上前磨牙,随机分为4组,常规制作IPS e.max CAD全瓷冠,分别用Duo-Link、Duo-Link+酸蚀、Variolink N以及Kerr NX3进行粘接。经冷热循环后,应用扫描电镜观察微渗漏和适合性情况,并进行统计学分析。结果 4组IPS e.max CAD全瓷冠的边缘微渗漏不同,Duo-Link组值最大,Kerr NX3值最小,Duo-Link组的边缘适合性差于其他3组,Kerr NX3的牙合面适合性优于其他3组。以上差异均有统计学意义(P<0.05)。结论三种树脂粘接剂粘接CEREC AC系统的IPS e.max CAD全瓷冠,对其边缘微渗漏和内部适合性均有影响。全酸蚀、湿粘接树脂粘接剂能有效减少边缘微渗漏,获得良好的边缘和内部适合性。IPS e.max CAD全瓷冠加工精准度高,可以获得良好的边缘和内部适合性。更多还原

【Abstract】 Objective To compare the micro-leakage and adaptation of IPS e. max CAD core ceramic using three types of resin adhesives. Methods Forty extracted maxillary premolars were selected and randomly assigned to four groups,Duo-Link group,Duo-Link + acid etching group,Variolink N group and Kerr NX3 group. Four different cementing methods were used for each group respectively. The micro-leakage and adaptataion were examined with SEM. Results The four groups demonstrated significantly different degree of micro-leakage,with Duo-Link group being the most and err NX3 group being the less microleakage and better occlsual adaptation. The differences were statistically significant( P < 0. 05).Conclusion The acid etching,soft air abrasion could effectively reduce the edge of the micro-leakage and obtain good adaptation. Variolink N and Kerr NX3 were the superior anti-microleakage resin adhesives. IPS e. max CAD showed better adaptation.更多还原