In vitro experimental study of bonding between aluminium oxide ceramicsand resin cements

ABSTRACT

To evaluate bond strengths of different resin cements to two aluminum oxide-based ceramics. Methods: Onehundred ten ceramic cylinders were produced and given four different surface treatments. Resin cement cylinderswere then bonded to the ceramic cylinders using different resin cements and the bond strength was determinedby shear testing to the breaking point. We were thus able to obtain results for the different combinations of porcelain,surface treatments and cements. All data was analyzed using the Kruskal-Wallis test for more than twoindependent samples and the Bonferroni correction applied (a=0.01). An optical microscopy study was carriedout to analyze the type of failure, and an electronic microscopy examination was carried out in order to evaluatethe changes produced in the ceramic by the different surface treatments. Results: The best values correspondedto the control group, composed of silicate ceramics combined with Variolink II resin cement. In-Ceram Aluminashowed no significant differences with respect to the type of cement applied. Procera AllCeram obtained the bestvalues when silica coated using the CoJet System and applying Variolink II, or when sandblasted and applyingClearfil SE Bond + Porcelain Bond Activator and Panavia F cement. Significance: Surface treatment modifies theceramic surface and influences the bond strength, as does the type of cement used. Silica coating is recommendedto improve adhesion to Procera AllCeram, applying Variolink II, or sandblasting plus resin cement containingMDP (Panavia F) (AU)

RESUMEN

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