2023-04-052023-04-05202120057806https://doi.org/10.4047/jap.2021.13.4.237http://146.190.124.33/handle/123456789/5973PURPOSE. This study aimed to compare the microshear bond strength (p.SBS) of dual-cure resin cement in CAD-CAM zirconia after different cleaning techniques. MATERIALS AND METHODS. Fifty discs of zirconia-based ceramic from Ivoclar Vivadent were embedded in acrylic resin. The discs were divided into five groups according to the cleaning methods used: Group 1: drying with spraying + sandblasting with Al2O3; Group 2: washed with water and dried with spraying + sandblasting with Al2O3; Group 3: washed with distilled water and dried with spraying + sandblasting with Al2O3 + zirconium oxide (Ivoclean); Group 4: washed with distilled water and dried with spraying + sandblasting with Al2O3 + potassium hydroxide (Zirclean); and Group 5: washed with distilled water and dried with spraying + sandblasting with Al2O3 + 1% NaClO. All of the groups were contaminated with artificial saliva for 1 minute and then cleaned. Statistical analyses were performed using ANOVA and Tukey's tests. RESULTS. There were statistically significant differences among all groups for p.SBS (P<. 05). The group treated with zirconium oxide (Group 3) showed the highest p.SBS (18.75 ± 0.23 MPa). CONCLUSION. When applied to zirconia, the cleaning methods affected the bonding with resin cement differently. [J Adv Prosthodont 2021;13:237-45] © 2021 The Korean Academy of Prosthodontics. All Rights Reserved.enginfo:eu-repo/semantics/article