【摘要】 目的:评估摩擦化学法硅涂层对氧化锆陶瓷粘接强度的影响。方法:将切割烧结后的Lava氧化锆瓷块60件分为6组,每2组分别经喷砂/硅烷偶联剂、喷砂/Co Jet Sand/硅烷偶联剂、无处理3种表面处理后,相同表面处理的2组中,每组分别用Rely X Unicem或Panavia F2.0与牙釉质粘接。各组随机抽取5件共30件进行24 h水浴,其余30件进行5000周水热循环,然后进行剪切粘接强度测试。采用SPSS 23.0软件包对数据进行双因素方差分析、Tukey HSD多重比较法及t检验。结果:喷砂/Co Jet/硅烷组的剪切强度均显著高于其他2组(P<0.001);经老化试验后,喷砂/Co Jet/硅烷组使用Rely X Unicem仍保持较高的剪切强度[(21.374±4.433)MPa],与其他各组相比有显著差异(P<0.001)。结论:摩擦化学法硅涂层能够有效提高氧化锆的粘接强度及耐久性,表面处理方式与粘接剂之间的相互作用需得到临床关注。更多还原

【Abstract】 PURPOSE:To evaluate the effect of tribochemical silica coating for zirconia bonding.METHODS:Sixty cut and fully sintered Lava frame zirconia blocks were randomly divided into 6 groups and subjected to 3 different surface treatments and 2 kinds of resin cement.The surface treatments were airborne-particle abrasion/silane,airborne-particle abrasion/Co Jet Sand(tribochemical silica coating)/silane and no treatment(control),resin cements were Rely X Unicem and Panavia F2.0.Half of the specimens in each group were randomly chosen and stored in 37 ℃ distilled water for 24 h,the others were thermocycled(5℃ and 55℃) for 5000 cycles.All specimens were subjected to shear bond strength(SBS)testing.SBS values were analyzed by two-way ANOVA and t test,and multiple pairwise comparisons were then completed with post hoc Tukey test.Statistical analysis was performed using SPSS23.0 software package for Windows.RESULTS:Airborne-particle abrasion/Co Jet sand/silane group resulted in a significantly higher SBS than those in other groups(P<0.001).After thermocycling,the bond strengths in the airborne-particle abrasion/Co Jet Sand/silane groups bonded with Rely X Unicem showed no significantly decrease while marked drop appeared in all other groups.CONCLUSIONS:Combination of tribochemical silica coating with silane coupling can effectively enforce the bond strengths of zirconia(YTZP).Attention should be paid to the interaction between surface treatments and resin cements.更多还原