Dantas Alana M, Campos Fernanda, Pereira Sarina M, Dos Santos Elis J, Pereira Laudenice L, Moura Dayanne M, Souza Rodrigo O
Department of Materials Science and Engineering, Federal University of Campina Grande (UFCG), Campina Grande, Brazil.
Federal University of João Pessoa (UFPB), Araruna, Brazil.
Minerva Stomatol. 2019 Apr;68(2):89-94. doi: 10.23736/S0026-4970.18.04217-6.
This study aimed to evaluate the influence of surface treatments on the bond strength between a zirconia-based ceramic and two resin cements.
Eighty blocks (5.25×3.74×4.5 mm) of a zirconia-based ceramic were divided into eight groups (N.=10) according to the factors "surface treatment" (air-particle abrasion with Al2O3 or Al2O3/SiO2 and zirconia primer) and "cement" (conventional resin cement and self-adhesive resin cement). After the surface treatments, cylinders of each resin cement (Ø=3.5 mm, height: 3 mm) were built up on the zirconia surface and photo-activated (40 s). The samples were stored in water for 30 days at 37 °C, followed by shear bond strength test in a universal testing machine (1 mm/min). Data were analyzed by ANOVA and Tukey test (α=0.05).
Regarding the surface treatments, all strategies were statistically different from each other. The Cojet achieved the higher bond strength values, followed by Signum Zirconia Bond. The resin cements were also statistically different from each other, since the U200 achieved higher bond strength values. The interaction between the factors was also significant. Most of the failures were adhesive and mixed.
Regardless of the cement used, the air-particle abrasion with alumina coated by silica particles improved bond strength.
本研究旨在评估表面处理对氧化锆基陶瓷与两种树脂水门汀之间粘结强度的影响。
将80块（5.25×3.74×4.5毫米）氧化锆基陶瓷根据“表面处理”（用Al2O3或Al2O3/SiO2进行空气颗粒研磨以及使用氧化锆底漆）和“水门汀”（传统树脂水门汀和自粘结树脂水门汀）这两个因素分为八组（每组n = 10）。表面处理后，在氧化锆表面制备每种树脂水门汀的圆柱体（直径 = 3.5毫米，高度：3毫米）并进行光活化（40秒）。将样品在37℃的水中储存30天，然后在万能试验机中进行剪切粘结强度测试（1毫米/分钟）。数据通过方差分析和Tukey检验进行分析（α = 0.05）。
关于表面处理，所有策略在统计学上彼此不同。Cojet获得了更高的粘结强度值，其次是Signum Zirconia Bond。树脂水门汀在统计学上也彼此不同，因为U200获得了更高的粘结强度值。因素之间的相互作用也很显著。大多数失败是粘结性和混合性的。
无论使用哪种水门汀，用二氧化硅颗粒包覆的氧化铝进行空气颗粒研磨均可提高粘结强度。
