Microshear bond strength of dual-cure resin cement in zirconia after different cleaning techniques: an in vitro study
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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( Atoche-Socola Katherine Joselyn ) - Universidad Cientifica del Sur School of Dentistry Division of Oral Rehabilitation
( Arriola-Guillen Luis Ernesto ) - Universidad Cientifica del Sur School of Dentistry Division of Orthodontic
( Lopez-Flores Ana Isabel ) - Universidad Cientifica del Sur School of Dentistry Division of Oral Rehabilitation
( Garcia Isadora Martini ) - Federal University of Rio Grande do Sul School of Dentistry Dental Materials Laboratory
( Huertas-Mogollon Gustavo ) - Universidad Cientifica del Sur School of Dentistry Division of Oral Rehabilitation
( Collares Fabricio Mezzomo ) - Federal University of Rio Grande do Sul School of Dentistry Dental Materials Laboratory
( Leitune Vicente Castelo Branco ) - Federal University of Rio Grande do Sul School of Dentistry Dental Materials Laboratory
Abstract
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.
키워드
Zirconia; Ceramics; Dental cements; Cleaning; Mechanical test
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