Journal article
In-situ nano-silica deposition and air-abrasion with Bioglass 45S5 or aluminium oxide: Effects on methacrylate bonding to yttria-tetragonal zirconia polycrystal
International journal of adhesion and adhesives, Vol.62, pp.32-39
10/01/2015
DOI: 10.1016/j.ijadhadh.2015.06.008
Abstract
This study aimed at assessing the bonding performance after water storage (24h/6-month) of a methacrylate-based cement applied onto Yttria-Tetragonal Zirconia Polycrystal(Y-TZP) pre-treated using an innovative in-situ silica nanoparticle deposition method and/or air-abrasion with Bioglass 45S5 (BAG) or aluminium oxide (AlO).
Pre-sintered blocks of Y-TZP were coated with nano-silica using an experimental in-situ deposition method or used as received (control/silica-free). Air-abrasion was performed with AlO or BAG particles both on silica-coated and control Y-TZP specimens. All the specimens were then analysed using SEM–EDX. Further specimens were treated as described above, bonded using a dual-cure resin cement system and submitted to shear bond strength test after water storage (24h and 6 months). Fracture analysis was subsequently performed using a stereo-microscope.
Uniform nano-silica deposition was achieved in the Y-TZP specimens after in-situ silica deposition treatment. However, AlO air-abrasion removed the nano-silica and roughened the Y-TZP surfaces. Conversely, BAG air-abrasion caused partial removal of the nano-silica layer and created only little retention in the control/silica-free Y-TZP specimens. The highest bond strength both at 24h and 6-month water storage was attained with the silica-coated specimens air-abraded with BAG and with those which received no air-abrasion. AlO air-abrasion increased the bond strength (24h) in the Y-TZP specimens compared to the control/silica-free specimens which received no air-abrasion or BAG air-abrasion.
The in-situ nano-silica coating method employed in this study may be a suitable, simplified and low-cost approach to provide reliable bond strength to Y-TZP ceramics. No air-abrasion is required after in-situ nano-silica deposition. However, AlO air-abrasion can create micro-retentions on the surface of silica-free Y-TZP ceramics and increases the immediate bond strength of methacrylate-based resin cements.
Details
- Title: Subtitle
- In-situ nano-silica deposition and air-abrasion with Bioglass 45S5 or aluminium oxide: Effects on methacrylate bonding to yttria-tetragonal zirconia polycrystal
- Creators
- Atanaz Darvizeh - Universidad Cardenal Herrera CEUArlinda Luzi - Universidad Cardenal Herrera CEUAli Abedi Amin - Universidad Cardenal Herrera CEUAline Oliveira-Ogliari - Universidade Federal de PelotasFabrício A. Ogliari - Universidade Federal de PelotasVictor P. Feitosa - Universidade Federal do CearáMaria Angeles García-Esparza - Universidad Cardenal Herrera CEUAgustín Pascual - Universitat de ValènciaSalvatore Sauro - Universidad Cardenal Herrera CEUVictor Pinheiro Feitosa - Operative Dentistry
- Resource Type
- Journal article
- Publication Details
- International journal of adhesion and adhesives, Vol.62, pp.32-39
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.ijadhadh.2015.06.008
- ISSN
- 0143-7496
- eISSN
- 1879-0127
- Language
- English
- Date published
- 10/01/2015
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654470602771
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