Purpose: This study aimed to compare the microshear bond strength (µSBS) 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 AlO; Group 2: washed with water and dried with spraying + sandblasting with AlO; Group 3: washed with distilled water and dried with spraying + sandblasting with AlO + zirconium oxide (Ivoclean); Group 4: washed with distilled water and dried with spraying + sandblasting with AlO + potassium hydroxide (Zirclean); and Group 5: washed with distilled water and dried with spraying + sandblasting with AlO + 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 µSBS ( < .05). The group treated with zirconium oxide (Group 3) showed the highest µSBS (18.75 ± 0.23 MPa).
Conclusion: When applied to zirconia, the cleaning methods affected the bonding with resin cement differently.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8410303 | PMC |
| http://dx.doi.org/10.4047/jap.2021.13.4.237 | DOI Listing |
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