Influência dos tratamentos de superfície das cerâmicas em zircônia na força de união

Abstract

This study aims to examine current scientific evidences about the methods of surface treatment of zirconia most suitable for better adhesion to resin cements according to the scientific literature, between the periods January 2007 to February 2012. Infrastructure of zirconia gained prominence among the fixed prosthesis because of its physical, biological and aesthetic properties. However, the process of union of this structure to dental cements is still a question. The zirconia ceramics are characterized by their extremely hard surfaces and have no silica in the composition, preventing use of the same type of treatment of feldspatic ceramics (hydrofluoric acid and silane). Several types of surface treatment are being investigated in an attempt to improve the cement/zirconia bonding interface. The databases used were Medline, Pubmed and Web of Science. After the literature were applied inclusion and exclusion criteria, remaining 21 articles for final analysis. After the extraction of the data collected, it was observed that the best results were found in association with air abrasion or silica coating and metal primers, or silanes. It was unable to perform a quantitative analysis due to heterogeneity of the studies regarding the type of treatment, cement used, type of aging, mechanical testing, method of applying the thermal cycling test, the storage form, among others. It is necessary to establish international standards for conducting scientific research.