Edition V16N01 | Year 2019 | Editorial Artigo Original | Pages 104 to 111
The objective of this study was to evaluate the influence of different surface treatments on shear bond strength of a yttrium stabilized zirconia (Y-TZP) to a self-adhesive resin cement. Methods: Cylindrical samples (5mm diameter x 10mm height) of a Y-TZP zirconia (Lava, 3M ESPE) were divided into four groups (n = 10): C) no surface treatment (control); A) universal adhesive (Universal Bond Single, 3M ESPE); J) sandblasting with silica-coated aluminum oxide (Al2O3) particles; and JA) sandblasting with silica-coated Al2O3 + universal adhesive + silane. The self-adhesive resin cement (Rely X Ultimate, 3M ESPE) was used to cement ceramic cylinders on acrylic resin blocks. The light-curing was performed using a LED (Valo, Ultradent) with irradiance of 1000 mW/cm2 for 25s. Samples were stored for 24 hours in dark at 37°C. The shear bond strength test was performed using a universal testing machine (EMIC, DL-2000). Data were analyzed statistically by ANOVA-1 way and Tukey test (5%). Results: The JA group showed the highest bond strength values. Both A and J groups showed the lowest bond strength values and did not differ statistically between them. The control group presented intermediate values. Conclusions: The surface treatment of the Y-TZP ceramic using sandblasting with silica-coated Al2O3 and universal adhesive significantly improved the bond strength between this creamic and self-adhesive resin cement.
Antunes Neto M, Brandt WC, Miranda ME, Vitti RP. Bond strength of a self-adhesive resin cement to Y-TZP ceramic subjected to different surface treatments. J Clin Dent Res. 2019 Jan-Apr;16(1):104-11. DOI: https://doi.org/10.14436/2447-911x.16.1.104-111.oar