Hydrofluoric acid etching of dental zirconia. Part 1: etching mechanism and surface characterization
Rough surfaces have been shown to promote osseointegration, which is one of the keys for a successful dental implantation. Among the diverse treatments proposed to roughen zirconia, hydrofluoric acid (HF) etching appears to be a good candidate, however little is known about this process. In this wor...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/82829 |
| Acceso en línea: | https://hdl.handle.net/2117/82829 https://dx.doi.org/10.1016/j.jeurceramsoc.2015.09.021 |
| Access Level: | acceso abierto |
| Palabra clave: | Biomedical materials Dental Implants Zirconia Hydrofluoric Etching Dental Roughness titanium implants ceramic implants oral implants topography osteoblast osseointegration adhesion behavior cells micrometer Materials biomèdics Implants dentals Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | Rough surfaces have been shown to promote osseointegration, which is one of the keys for a successful dental implantation. Among the diverse treatments proposed to roughen zirconia, hydrofluoric acid (HF) etching appears to be a good candidate, however little is known about this process. In this work, the effect of HF concentration and etching time on the surface topography and chemistry of yttria-stabilized zirconia was assessed. Besides, to understand the etching mechanism, the reaction products present in solution and on the surface were characterized. The results indicate suitable parameters for a fast and uniform roughening of zirconia. The formation of adhered fluoride precipitates on the surface is reported for the first time and highlights the importance of cleaning after etching. Finally, it is shown that monitoring the time allows controlling the surface roughness, smooth rough transition and fractal dimension, which should make possible the fabrication of implants with an optimal topography. (C) 2015 Elsevier Ltd. All rights reserved. |
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