Bonding to densely sintered alumina- and glass infiltrated aluminum / zirconium-based ceramics

Authors

  • Luiz Felipe Valandro University of Bologna
  • André Mallmann Foundation to the Science Development; School of Dentistry
  • Alvaro Della Bona University of Passo Fundo; School of Dentistry
  • Marco Antonio Bottino Paulo State University; Dept. of Dental Materials and Prosthodontics

DOI:

https://doi.org/10.1590/S1678-77572005000100010

Keywords:

Ceramics, Surface treatment, Bond strength, Microtensile test

Abstract

The objective of this study was to test two hypotheses: (1) silica coating affects the bond strength between ceramics and a resin cement; (2) bond strength is affected by the type of ceramic. Twelve blocks 5 x 6 x 8 mm of In-Ceram Zirconia (ZR) and twelve Procera AllCeram (PR) ceramics were made and duplicated in composite. Five blocks of each ceramic were treated as follows: (1) ZR + GB (laboratorial airborne particles abrasion with Al2O3 particles) + silane; (2) ZR + SC (chairside tribochemical silica coating system, Cojet); (3) PR + GB; (4) PR + SC. Two treated samples of ceramic were analyzed under SEM. The ceramic-composite blocks were cemented with Panavia F and stored in 37ºC distilled water for 7 days. They were then cut to produce bar specimens (n=30) with a bonding area of 0.6±0.1mm². Specimens were loaded to failure under tension in a universal testing machine (1 mm/min). Bond strength (sigma) values were statistically analyzed using ANOVA (Two-way) and Tukey (alpha = 0.05). Mean sigma (MPa) and standard deviation were as follows: 1) 15.1 ± 5.3; 2) 26.8 ± 7.4; 3) 12.7 ± 2.6; 4) 18.5 ± 4.7. Silica coated surfaces showed statistically higher sigma than the same substrate treated with GB only. In addition, ZR (with vitreous phase) showed higher ó than PR (without vitreous phase).

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Published

2005-03-01

Issue

Section

Original Articles

How to Cite

Bonding to densely sintered alumina- and glass infiltrated aluminum / zirconium-based ceramics . (2005). Journal of Applied Oral Science, 13(1), 47-52. https://doi.org/10.1590/S1678-77572005000100010