Effect of Surface Treatment of Yttria Stabilized Zirconia for Dental Prostheses

Abstract:

When it comes to providing reliable adhesion of low silica content alumina ceramic, hydrofluoric acid etching along with silanization has not shown sufficient efficacy because the microstructure of high-alumina content ceramics is unable to degrade them. The objective of this study was to analyze the effect of surface sandblasting of zirconia-based ceramic stabilized by yttria as used in dental prostheses, using a SEM and roughness average. The samples were divided in control, no surface treatment; Al₂O₃ sandblasting; Al₂O₃ sandblasting and Al₂O₃ + SIC particles 110 µm average sized; Al₂O₃ sandblasting and Al₂O₃ + SIC particles 110 µm average sized milled for 2 hours; Al₂O₃ sandblasting and Al₂O₃ + SIC particles 110 µm average sized milled for 6 hours. The Al₂O₃ sandblasting and the 2-hour milled Al₂O₃ + SIC particles showed better results and better characterization of roughness in SEM with the silica deposition on the samples surface.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 831-836
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.831
• Online since: August 2012
• Authors: Cristiane Fonseca de Carvalho, Cláudio Luis Melo-Silva, Claudinei Santos, Jefferson Fabricio Cardoso Lins
• Keywords: Aluminum Oxide, Ceramic, Dental Prostheses

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