Journal article
Methacrylate bonding to zirconia by in situ silica nanoparticle surface deposition
Dental materials, Vol.31(1), pp.68-76
01/01/2015
DOI: 10.1016/j.dental.2014.11.011
PMID: 25498521
Abstract
Objective. This study introduces an innovative method to enhance adhesion of methacrylate-based cements to yttria-stabilized zirconia (Y-TZP) by means of a silica-nanoparticle deposition process.
Methods. Two alkoxide organic precursors, tetraethyl-orthosilicate (TEOS) and zirconiumtert-butoxide (ZTB) were diluted in hexane at different concentrations in order to obtain several experimental materials to enhance deposition of a SiOx reactive layer to Y-TZP. This deposition was attained via sintering alkoxide precursors directly on pre-sintered zirconia( infiltration method-INF) or application on the surface of fully sintered zirconia (coating method-COA). Untreated specimens and a commercial tribochemical silica coating were also tested as controls and all the treated Y-TZP specimens were analyzed using SEM-EDX. Specimens were bonded using silane, adhesive and dual-cure luting cement and submitted to shear bond strength test after different water storage periods (24 h, 3-, 6-and 12-months).
Results. SEM-EDX revealed Y-TZP surface covered by silica nanoclusters. The morphology of silica-covered Y-TZP surfaces was influenced by sintering method, employed to deposit nanoclusters. High bond strength (MPa) was observed when using COA method; highest TEOS percentage achieved the greatest bond strengths to Y-TZP surface (36.7 +/- 6.3 at 24 h). However, bonds stability was dependent on ZTB presence (32.9 +/- 9.7 at 3 months; 32.3 +/- 7.1 at6 months). Regarding INF method, the highest and more stable resin-zirconia bond strength was attained when using experimental solutions containing TEOS and no ZTB. Both sintering methods tested in this study were able to achieve a bonding performance similar to that of classic tribochemical strategies.
Significance. This study demonstrates that it is possible to achieve a reliable and long-lasting bonding between yttria-stabilized zirconia ceramic and methacrylate-based cements when using this novel, simple, and cost-effective bonding approach. (C) 2014 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Methacrylate bonding to zirconia by in situ silica nanoparticle surface deposition
- Creators
- Aline Oliveira-Ogliari - Universidade Federal de PelotasFabricio M. Collares - Universidade Federal do Rio Grande do SulVictor P. Feitosa - Universidade Federal do CearáSalvatore Sauro - Universidad Cardenal Herrera CEUFabricio A. Ogliari - Universidade Federal de PelotasRafael R. Moraes - Universidade Federal de Pelotas
- Resource Type
- Journal article
- Publication Details
- Dental materials, Vol.31(1), pp.68-76
- Publisher
- Elsevier
- DOI
- 10.1016/j.dental.2014.11.011
- PMID
- 25498521
- ISSN
- 0109-5641
- eISSN
- 1879-0097
- Number of pages
- 9
- Grant note
- 308404/2011-4 / CNPq/Brazil; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) 01.10.0709.00 / FINEP/Brazil; Financiadora de Inovacao e Pesquisa (Finep)
- Language
- English
- Date published
- 01/01/2015
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984655343402771
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