水储存对自粘接树脂水门汀与氧化锆陶瓷粘结强度的影响。
Effect of water storage on bond strength of self-adhesive resin cements to zirconium oxide ceramic.
机构信息
Department of Dentistry, State University of Amazonas, Manaus, Brazil.
出版信息
J Adhes Dent. 2013 Apr;15(2):145-50. doi: 10.3290/j.jad.a28733.
PURPOSE
To evaluate the microshear bond strength of resin cements to yttrium-stabilized tetragonal zirconium oxide surfaces after water storage for 24 h or 1 year.
MATERIALS AND METHODS
Four self-adhesive (BisCem, G-Cem, RelyX Unicem, SeT) and one conventional resin cement (RelyX ARC) were tested. The materials were mixed and inserted in tubes (0.75 mm diameter × 1 mm height) that were placed over the zirconium oxide surface. Specimens were tested after 24-h or 1-year water storage. Microshear testing was performed using a universal testing machine. Shear bond strength results were analyzed using two-way ANOVA and Tukey's test (5%).
RESULTS
After 24-h water storage, no difference was found between G-Cem and RelyX Unicem resin cements; however, their bond strength means to zirconium oxide were statistically higher than RelyX ARC. The bond strength values of all resin cements dropped significantly after 1 year of water storage. G-Cem presented the highest values among cements after long-term water exposure.
CONCLUSIONS
One-year water storage decreased the microshear bond strengths to zirconium oxide for all resin cements tested.
目的
评估水储存 24 小时或 1 年后，树脂水门汀与氧化钇稳定四方氧化锆表面的微剪切结合强度。
材料与方法
测试了四种自粘接（BisCem、G-Cem、RelyX Unicem、SeT）和一种传统树脂水门汀（RelyX ARC）。将材料混合并插入管中（直径 0.75 毫米×1 毫米高），然后将管放置在氧化锆表面上。在 24 小时或 1 年水储存后进行微剪切测试。使用万能试验机进行剪切结合强度测试。采用双因素方差分析和 Tukey 检验（5%）对剪切结合强度结果进行分析。
结果
在 24 小时水储存后，G-Cem 和 RelyX Unicem 树脂水门汀之间没有差异；然而，它们对氧化锆的结合强度均值明显高于 RelyX ARC。所有树脂水门汀的结合强度值在 1 年水储存后显著下降。在长期水暴露后，G-Cem 表现出所有水门汀中最高的强度值。
结论
1 年水储存降低了所有测试的树脂水门汀与氧化锆的微剪切结合强度。
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