Influence of surface treatments on topography and bond strength of densely-sintered zirconium-oxide ceramic |
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| Affiliation: | 1. Department of Restorative Dentistry, University of Bahia, Salvador, Bahia, Brazil;2. Department of Prosthodontics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil;3. Department of Prosthodontics, University of Taubaté, Taubaté, São Paulo, Brazil;1. Department of Chemical Engineering, Ariel University, Kiryat Hamada 1, Ariel 40700, Israel;2. Department of Materials Engineering, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 8410501, Israel;3. Department of Metallurgy, South Ural State University, Chelyabinsk, Russia;1. School of Physics, Universiti Sains Malaysia, 11800 USM Penang, Malaysia;2. Institute of Nano-Optoelectronics Research and Technology Laboratory (INOR), Universiti Sains Malaysia, 11800 USM Penang, Malaysia;1. Institute for Coastal and Marine Environment (IAMC – CNR), Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, TP, Italy;2. Laboratory of Public Health – ASP of Syracuse, Corso Gelone, 17, 96100, Syracuse, Italy;3. Institute for Coastal and Marine Environment (IAMC – CNR), Calata Porta di Massa, Interno Porto di Napoli, 80133 Naples, Italy |
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| Abstract: | The aim of this study was to evaluate the effect of surface treatments on the roughness and bond strength of dental materials containing MDP to zirconium oxide ceramic. Forty square-shaped zirconium-oxide ceramic blocks (Lava Zirconia, 3M-ESPE) were treated as follows: (CT) polished only; (SB) sandblasting (110 µm aluminum oxide particles) or (SC) silica coating (110 µm particles). Roughness of treated surface was measured using a profilometer (Ra) and by atomic force microscope (AFM). Two resin luting agents were used after silane application: self-adhesive (Rely X U200, 3M-ESPE) and dual cure (Rely X Ultimate, 3M-ESPE). The samples were submitted to microshear bond strength test. The failure analysis was performed. Data were submitted to ANOVA and Tukey test (α=0.05). Bond strength results ranged from 20.44 (CT+Ultimate) to 34.37 MPa (SC+U200) after 24 h and from 12.03 (CT+Ultimate) to 27.44 MPa (SC+U200) after 12 months of storage with SC statistically superior to the other treatments. Mean values of roughness varied from 0.07 (CT) to 0.85 µm (SC). The both resin luting agents showed similar results to all surface treatment groups. Silica coating provided the best treatment of the ceramic surface. |
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| Keywords: | B. Failure analysis B. Surfaces C. Chemical properties C. Strength |
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