In vitro shear bond strength of two self-adhesive resin cements to zirconia
| Autor: | Marc Campillo-Funollet, Dana M. Qeblawi, Carlos A. Muñoz |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Dental Stress Analysis
Ceramics Curing Lights Dental Time Factors Materials science Surface Properties Composite number Dental bonding Composite Resins Nanocomposites Polymerization Dental Materials Coated Materials Biocompatible Materials Testing Humans Yttrium Cubic zirconia Composite material Acrylic resin Cement Universal testing machine Bond strength Dental Bonding Temperature technology industry and agriculture Water Silanes Silicon Dioxide Cementation (geology) Resin Cements Acrylates visual_art Microscopy Electron Scanning visual_art.visual_art_medium Methacrylates Stress Mechanical Zirconium Oral Surgery Shear Strength |
| Zdroj: | The Journal of Prosthetic Dentistry. 113:122-127 |
| ISSN: | 0022-3913 |
| Popis: | Statement of problem Although the use of anatomic-contour zirconia restorations has expanded in the recent past, disagreement still exists as to reliable cementation techniques and materials. Purpose The purpose of this in vitro study was to compare the immediate and artificially aged shear bond strength of 2 commercially available self-adhesive resin cements to zirconia: one with silica coating and silanation as a zirconia surface treatment and the other contained a phosphate monomer, which eliminated the need for a separate primer. Material and methods Sixty composite resin rods (2.5 mm in diameter and 3 mm in length) were fabricated from a nano-optimized composite resin by using a polypropylene mold, then light polymerized with a light-emitting diode. zirconia plates (10×10×4mm) were sectioned from an yttrium-stabilized zirconia puck, sintered, and then mounted in autopolymerizing acrylic resin custom tray material. Composite resin rods were cemented to the zirconia plates with 2 different cements. The surface treatment of zirconia followed the manufacturers' instructions for each cement. The specimens were tested for shear bond strength at 3 aging conditions: immediate, after 24 hours of moist storage, and after 30 days of moist storage with 10000 thermocycles. Specimens were loaded to failure in a universal testing machine, and the data were analyzed with 2-way ANOVA (α=.05). Weibull parameters (modulus and characteristic strength) also were calculated for each group. Results Two-way ANOVA revealed that only the aging condition significantly affected the bond strength to zirconia. The cement and the interaction of the cement and aging did not significantly affect the shear bond strength to zirconia. The highest bond strength for both cements was achieved at 24 hours, whereas the lowest bond strength values were recorded in the immediate groups. Conclusions No significant differences in bond strength to zirconia were observed between a cement with a silane priming step and an methacryloxydecyl dihydrogen phosphate-containing cement without a separate primer. Aging had a significant effect on the shear bond strength of the 2 self-adhesive resin cements to zirconia. |
| Databáze: | OpenAIRE |
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