Publicação: Improved adhesion of Y-TZP ceramics: A novel approach for surface modification
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
The aim of this study was to evaluate the effect of novel surface treatments of Y-TZP ceramics on initial shear bond strengths to resin cement. Seventy-two samples (7 × 6 × 5 mm) were randomly divided into 6 groups (n = 12): Group 1 (G1), no treatment; Group 2 (G2), tribosilicatization (TS); Group 3 (G3), vitreous application 1 + etching with hydrofluoric acid (HF); Group 4 (G4), vitreous application 1 + TS; Group 5 (G5), vitreous application 2 + HF etching; Group 6 (G6), vitreous application 2 + TS. Surface roughness (Ra) evaluation was performed by optical profilometry, scanning electron microscopy, and X-ray spectroscopy. The samples were silanized, and resin cement cylinders (3 x 2 mm) were built on the treated surfaces, light cured, and submitted to shear testing (1 mm/min). The failure mode was evaluated by scanning electron microscope. Bond strength data were statistically analyzed using 1-way ANOVA and Tukey's test (α = 0.05). Bond strength results were significantly affected by surface treatments (P = 0.0001). G5 and G3 presented increased Ra parameters and showed highest bond strength results (17.8 ± 5.5 and 13.3 ± 4.1, respectively). Failure modes were mainly mixed in all groups except for G1. The results confirmed that the approach of coating surface-conditioned Y-TZP with a vitreous material increased the initial shear bond strength to resin cement.
Descrição
Palavras-chave
Adhesion, Bond strength, Glaze, Surface treatment, Y-TZP
Idioma
Inglês
Como citar
General Dentistry, v. 62, n. 1, p. e22-e27, 2014.
