Xia Yuhong, Xu Fei, Chen Lei, Zhou Xiongwen, Cao Yang, Tong Hui
Department of Implant and Prosthodontics, Haizhu Square Branch, Stomatological Hospital of Southern Medical University, Guangzhou 510280, China.
Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China.
Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2019 Jan 28;44(1):53-58. doi: 10.11817/j.issn.1672-7347.2019.01.009.
To compare the effect of three different surface zirconium oxide treatments on binding strength and fracture patterns between zirconia and veneering ceramics. Methods: A total of 40 zirconia specimens and 10 nickel-chromium alloy were divided into 5 groups (n=10 in each group): a treatment group by zirconium oxide sand-blaste (Group A), a zirconia bonded porcelain group (Group B), a hot-etching solution group (Group C), a non-treatment zirconia (Group D) and a non-treatment nickel-chromium alloy group (Group E). After all treatments, a veneering porcelain (4 mm×4 mm×2 mm) was formed onto the center of all substrate specimens by plastic coating method. Shear bond strength (SBS) test with a universal testing machine was used in each group. Scanning electron microscopy was used to observe the surface morphology of the damaged specimen interface, which was randomly selected from each group. Results: The SBS test showed that there was no significant difference in SBS results between the Group A, the Group B and the Group D (both P>0.05), and both of them were significant less than that in the group E (both P<0.05). The SBS results in the Group C were significantly higher than that in the Group D, the Group A, and the Group B (all P<0.05), but there were no significant difference compared with that in the Group E (P<0.05). Conclusion: Sand-blaste and liner application on zirconia ceramic contribute no effect to binding strength between zirconia and veneering ceramics, but hot-etching solution can increase the binding strength between zirconia and veneering ceramics.
比较三种不同的表面氧化锆处理对氧化锆与饰面陶瓷之间结合强度和断裂模式的影响。方法：将40个氧化锆标本和10个镍铬合金分为5组（每组n = 10）：氧化锆喷砂处理组（A组）、氧化锆粘结瓷组（B组）、热蚀刻溶液组（C组）、未处理的氧化锆组（D组）和未处理的镍铬合金组（E组）。所有处理后，通过塑料涂层法在所有基底标本的中心形成一块饰面瓷（4mm×4mm×2mm）。每组使用万能试验机进行剪切粘结强度（SBS）测试。使用扫描电子显微镜观察从每组中随机选择的受损标本界面的表面形态。结果：SBS测试表明，A组、B组和D组之间的SBS结果无显著差异（均P>0.05），且两者均显著低于E组（均P<0.05）。C组的SBS结果显著高于D组、A组和B组（均P<0.05），但与E组相比无显著差异（P<0.05）。结论：氧化锆陶瓷上的喷砂处理和衬层应用对氧化锆与饰面陶瓷之间的结合强度没有影响，但热蚀刻溶液可以提高氧化锆与饰面陶瓷之间的结合强度。
