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Effect of two universal adhesives on microshear bond strength of resin cement to zirconia

机译：两种通用胶粘剂对树脂水泥与氧化锆微剪切粘结强度的影响

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Background . Considering the increasing demand of patients for esthetic and durable restorations, zirconia, with its excellent mechanical properties, has overcome most of the limitations of all-ceramic restorations. However, bonding to zirconia is still challenging. Objectives . This study compared the effect of 2 universal adhesives on the microshear bond strength of resin cement to zirconia after 24 h and 6 months of water storage. Material and Methods . This in vitro experimental study was performed on 56 zirconia (Prettau? Zirconia) blocks, which were randomly divided into 2 groups. The ScotchbondTM Universal single-component adhesive and the All-Bond UniversalTM 2-component adhesive were used. The PANAVIATM F 2.0 resin cement was bonded to all samples, and they were stored in distilled water for 24 h and 6 months. The microshear bond strength test was then performed, and the data was analyzed using the Kruskal–Wallis and Mann–Whitney tests. Results . After 24 h of water storage, the All-Bond samples showed significantly higher microshear bond strength than the Scotchbond samples (p 0.001), but at 6 months, the microshear bond strength of Scotchbond was higher. The bond strength of All-Bond decreased after 6 months (p 0.001), but no significant change occurred in the bond strength of the Scotchbond samples over time. Conclusion . The microshear bond strength of resin cement to zirconia depends on the type of adhesive and the duration of water storage. The Scotchbond Universal adhesive resulted in a stronger bond in the long term.
机译：背景 。考虑到患者对美观和耐用的修复体的需求不断增加，氧化锆具有出色的机械性能，克服了全瓷修复体的大部分局限性。然而，与氧化锆的键合仍然具有挑战性。目标。这项研究比较了两种通用粘合剂对储水24小时和6个月后树脂水泥与氧化锆的微剪切粘结强度的影响。材料与方法 。这项体外实验研究是对56个氧化锆（Prettau？Zirconia）块进行的，将其随机分为2组。使用了ScotchbondTM Universal单组分粘合剂和All-Bond UniversalTM 2组分粘合剂。 PANAVIATM F 2.0树脂胶粘剂粘结到所有样品上，并在蒸馏水中存储24小时和6个月。然后进行微剪切粘结强度测试，并使用Kruskal–Wallis和Mann–Whitney测试分析数据。结果。储水24小时后，All-Bond样品的微剪切粘合强度明显高于Scotchbond样品（p <0.001），但在6个月时，Scotchbond的微剪切粘合强度更高。 6个月后，All-Bond的粘合强度下降（p <0.001），但苏格兰威士忌样品的粘合强度没有随时间发生显着变化。结论。树脂水泥与氧化锆的微剪切粘结强度取决于粘合剂的类型和储水时间。从长远来看，Scotchbond Universal粘合剂可产生更强的粘合力。

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