Edition V13N04 | Year 2016 | Editorial Artigo Original | Pages 88 to 94
The aim of this study was to evaluate the shear bond strength of a dual- cure resin cement (Panavia F, Kuraray) to two zirconia ceramics (Lava, 3M ESPE and Katana, Kuraray Noritake) with prior application a coupling agent (Z-Prime Plus, Bisco or Monobond Plus, Ivoclar Vivadent), argon plasma or a combination of coupling agent and plasma. Zirconia plates with dimensions of 13mm long x 5mm wide x 1mm thick approximately were used. The zirconia surfaces were abraded with Al2O3 sandpaper (600-grit) and treated in accordance with each experimental group (untreated, coupling agent and/or plasma). Cylindrical-shaped specimens were prepared on treated zirconia surface using silicone matrix with internal dimensions of 1.4mm diameter x 1mm in height. The shear test was carried out in a testing machine after 24 hours and one year of water storage of specimens. Bond strength data values were expressed in MPa and values analyzed by three-way ANOVA and Tukey’s test (5%). Although the non-use of coupling agents and plasma showed higher bond strength values, the adhesion reduced after one year. The use of Z-Prime Plus with or without plasma application did not reduce the bond strength after one year, but the bond strengths were lower than those obtained with the use of resin cement alone without previous treatment of zirconia. Plasma did not increase the bond strength to zirconia. Thus, for the adhesion to zirconia, the use of resin cement only was enough to obtain adequate bond strength results.
Mendonça BC, Negreiros WM, Ambrosano GMB, Giannini M. Study of the effectiveness of the application of primers, plasma and their combination on the bond strength of a resin cement to zirconia. J Clin Dent Res. 2016 Oct-Dec;13(4):88-94. DOI: http://dx.doi.org/10.14436/2447-911x.13.4.088-094.oar