Bond to Zirconia Ceramic: Evaluation of Different Primers and a Universal Adhesive
Diego Fabris Ferreira da Silva1, Raquel de Oliveira Lopes1, Niélli Caetano de Souza1, Maurem Leitão Marcondes1, Patrícia Danesi1, Ana Maria Spohr2, *
1 Department of Restorative Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
2 Department of Dental Materials, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
The aim of the study was to evaluate the effect of a universal adhesive and different primers on the bond strength to zirconia ceramic.
Materials and Methods:
Seventy-five zirconia ceramic samples were obtained and divided into five groups (n=15): G1–Scothbond Universal (SBU); G2 – silane + SBU; G3 - Signum Zirconia Bond; G4 - Z-Prime Plus; G5 - MZ Primer. A cone of composite resin was built. The specimens were stored in 100% relative humidity with distilled water at 37°C for 48 h and then submitted to a tensile bond strength test in a universal testing machine at a crosshead speed of 0.5 mm/min. The type of failure that occurred during the de-bonding procedure was analyzed.
The mean results of the bond strength test (MPa) followed by the same letter represent no statistical difference by ANOVA and Tukey’s post-hoc test (p<0.05): G2=27.55a (±6.99), G4=23.71a (±5.65), G1=22.64a (±5.67), G5=13.64b (±5.49), G3=7.54c (±4.75). G2 and G4 exhibited predominantly cohesive failure in the composite resin cone. G1 and G5 had predominantly mixed failures, and G3 exhibited only adhesive failures.
The SBU and Z-Prime Plus provided higher bond strength to zirconia ceramic.
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* Address Correspondence to this author at the Department of Dental Materials, Pontifical Catholic University of Rio Grande do Sul, Avenida Ipiranga, 6681, 90616-900 Porto Alegre, RS, Brazil; Tel: +55-51-3320.3538; E-mail: email@example.com