J Korean Acad Prosthodont.  2023 Jul;61(3):179-188. 10.4047/jkap.2023.61.3.179.

Effect of various surface treatment methods of highly translucent zirconia on the shear bond strength with resin cement

• Kim YS
• Choi JW
• Kim HK

• KMID: 2544971
• DOI: http://doi.org/10.4047/jkap.2023.61.3.179

Abstract

Purpose
. The purpose of this study was to evaluate the effect of surface treatments on the shear bond strength of two types of zirconia (3-TZP and 5Y-PSZ) with resin cement.
Materials and methods
. Two different types of zirconia specimens with a fully sintered size of 14.0 × 14.0 × 2.0 mm 3 were prepared, polished with 400, 600, and 800 grit silicon carbide paper, and buried in epoxy resin. They were classified into four groups each control, sandblasting, primer, and sandblasting & primer. Cylindrical resin adhered to the surface-treated zirconia with resin cement. It was stored in distilled water (37°C) for 24 hours, and a shear bond strength test was performed. The normality of the experimental group was confirmed with the Kolmogorov-Smirnov & Shapiro-Wilk test. The interaction and statistical difference were analyzed using a two-way ANOVA. A post-hoc analysis was performed using Dunnett T3.
Results
. As a result of two-way ANOVA, there was no significant difference in shear bonding strength between zirconia types (P > .05), but there was a significant correlation in the sandblasting, primer, and alumina sandblasting & primer group (P < .05). Dunnett T3 post-test showed that, regardless of the type of zirconia, shear bonding strength was sandblasting & primer > Primer > sandblasting > control group (P < .05).
Conclusion
. There was no difference in shear bond strength between the types of zirconia. The highest shear bond strength was shown when the mechanical and chemical treatments of the zirconia surface was performed simultaneously.

Keyword

Aluminum oxide; Methacryloyloxydecyl dihydrogen phosphate; Resin cement; Shear strength; Yttria stabilized tetragonal zirconia