Open AccessDURABILIDADE DA UNIÃO À CERÂMICA DE ZIRCÔNIA TETRAGONAL POLICRISTALINA CONTENDO ÍTRIO (Y-TZP)
Author(s) -
Juliana Souza Carvalho,
Marcelo Giannini,
Andréa Nóbrega Cavalcanti
Publication year - 2012
Publication title -
journal of dentistry and public health
Language(s) - English
Resource type - Journals
ISSN - 2596-3368
DOI - 10.17267/2596-3368dentistry.v3i1.30
Subject(s) - materials science , adhesive , ceramic , composite material , cement , abrasion (mechanical) , cubic zirconia , durability , bond strength , layer (electronics)
Purpose: This study evaluated in vitro the durability of the bond between resin cement and Y-TZP ceramic, testing the effect of different surface treatments and the previous application of an adhesive system over the ceramic. Methods: Forty Y-TZP ceramic plates were distributed into four experimental groups (n=10) according to the combination between surface treatment (air abrasion or Er:YAG laser irradiation) and adhesive system application (Scotchbond Multi Purpose – catalyst or Single Bond 2) in the plate previously to the use of the resin cement. After the surface treatment, resin cement cylinders were built using 0.8x1mm matrices (diameter x height). In each group, 5 specimens were tested for microshear after 24h, and other 5 specimens were tested after 6 months of water storage. Results: Regardless of the adhesive system or period, greater means were obtained in air abraded groups. No statistically significant difference between adhesive systems or periods. Conclusion: It could be concluded that the air abrasion improves bonding to T-TZP ceramic, regardless of the adhesive system used to coat zirconia ceramic surfaces.