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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Si-based thin film coating on Y-TZP: Influence of deposition parameters on adhesion of resin cement

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Author(s):
Cavalcanti Queiroz, Jose Renato [1] ; Nogueira Junior, Lafayette [2] ; Massi, Marcos [3] ; Silva, Alecssandro de Moura [2] ; Bottino, Marco Antonio [2] ; da Silva Sobrinho, Argemiro Soares [4] ; Oezcan, Mutlu [5]
Total Authors: 7
Affiliation:
[1] Univ Potiguar, Dept Biotechnol, BR-59020280 Natal, RN - Brazil
[2] Sao Paulo State Univ, Dept Prosthodont & Dent Mat, Sao Jose Dos Campos - Brazil
[3] Univ Fed Sao Paulo, Inst Sci & Technol, Sao Jose Dos Campos - Brazil
[4] Technol Inst Aeronaut, Dept Phys, Sao Jose Dos Campos - Brazil
[5] Univ Zurich, Dent Mat Unit, Ctr Dent & Oral Med, Clin Fixed & Removable Prosthodont & Dent Mat Sci, Zurich - Switzerland
Total Affiliations: 5
Document type: Journal article
Source: Applied Surface Science; v. 282, p. 245-252, OCT 1 2013.
Web of Science Citations: 4
Abstract

This study evaluated the influence of deposition parameters for Si-based thin films using magnetron sputtering for coating zirconia and subsequent adhesion of resin cement. Zirconia ceramic blocks were randomly divided into 8 groups and specimens were either ground finished and polished or conditioned using air-abrasion with alumina particles coated with silica. In the remaining groups, the polished specimens were coated with Si-based film coating with argon/oxygen magnetron discharge at 8:1 or 20:1 flux. In one group, Si-based film coating was performed on air-abraded surfaces. After application of bonding agent, resin cement was bonded. Profilometry, goniometry, Energy Dispersive X-ray Spectroscopy and Rutherford Backscattering Spectroscopy analysis were performed on the conditioned zirconia surfaces. Adhesion of resin cement to zirconia was tested using shear bond test and debonded surfaces were examined using Scanning Electron Microscopy. Si-based film coating applied on air-abraded rough zirconia surfaces increased the adhesion of the resin cement (22.78 +/- 5.2 MPa) compared to those of other methods (0-14.62 MPa) (p = 0.05). Mixed type of failures were more frequent in Si film coated groups on either polished or air-abraded groups. Si-based thin films increased wettability compared to the control group but did not change the roughness, considering the parameters evaluated. Deposition parameters of Si-based thin film and after application of air-abrasion influenced the initial adhesion of resin cement to zirconia. (C) 2013 Elsevier B. V. All rights reserved. (AU)