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KMID : 1023820210130040237
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The Journal of Advanced Prosthodontics
2021 Volume.13 No. 4 p.237 ~ p.245
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Microshear bond strength of dual-cure resin cement in zirconia after different cleaning techniques: an in vitro study
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Atoche-Socola Katherine Joselyn
Arriola-Guillen Luis Ernesto
Lopez-Flores Ana Isabel
Garcia Isadora Martini
Huertas-Mogollon Gustavo
Collares Fabricio Mezzomo
Leitune Vicente Castelo Branco
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Abstract
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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 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 μSBS (P < .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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KEYWORD
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Zirconia, Ceramics, Dental cements, Cleaning, Mechanical test
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