Publicação: Effect of surface treatments on the resin bond to zirconium-based ceramic
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Purpose: This study tested the hypothesis that the tribochemical silica coating on ceramic surfaces increases the bond strength of resin cement to a glass-infiltrated zirconium-based ceramic. Materials and Methods: Fifteen blocks of In-Ceram Zirconia from CEREC InLab (5 per group) and 15 composite blocks (Z-250) 5 mm x 5 mm x 4 mm were made. The ceramic surfaces were polished, and the blocks were divided into three groups: (1) airborne abrasion with 110-μm aluminum oxide particles; (2) Rocatec system, tribochemical silica coating; and (3) CoJet system, tribochemical silica coating. The ceramic blocks were cemented to the composite blocks using Panavia F according to the manufacturer's specifications. All samples were stored in 37°C distilled water for 7 days and later sectioned in two axes using a diamond disk under cooling to obtain specimens with a cross-sectional area of approximately 1 mm2 (n = 45). Each specimen was then attached with cyanoacrylate glue to an adapted device for the microtensile test, which was carried out on a universal testing machine. Results: The results were subjected to ANOVA and Tukey's test. Group 2 (23.0 ± 6.7 MPa) and group 3 (26.8 ± 7.4 MPa) showed greater bond strength than group 1 (15.1 ± 5.3 MPa). There was no significant difference between groups 2 and 3. All failures were in the adhesive zone. Conclusion: The hypothesis was confirmed - the tribochemical systems increased the bond strength between Panavia F and In-Ceram Zirconia.
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adhesive agent, aluminum oxide, cyanoacrylate, diamond, resin cement, silicon dioxide, zirconium, analysis of variance, cementation, dental bonding, material coating, strength, temperature measurement, Air Abrasion, Dental, Aluminum Oxide, Analysis of Variance, Composite Resins, Dental Bonding, Dental Cements, Dental Porcelain, Dental Stress Analysis, Friction, Materials Testing, Resin Cements, Silicon Dioxide, Statistics, Nonparametric, Surface Properties, Tensile Strength
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Inglês
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International Journal of Prosthodontics, v. 18, n. 1, p. 60-65, 2005.
