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Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses
Sol–gel processing is an attractive method for large-scale surface coating due to its facile and inexpensive preparation, even with the inclusion of precision nanotopographies. These are desirable traits for metal orthopaedic prostheses where ceramic coatings are known to be osteoinductive and the e...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4686541/ https://www.ncbi.nlm.nih.gov/pubmed/26691162 http://dx.doi.org/10.1007/s10856-015-5611-3 |
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author | Greer, Andrew I. M. Lim, Teoh S. Brydone, Alistair S. Gadegaard, Nikolaj |
author_facet | Greer, Andrew I. M. Lim, Teoh S. Brydone, Alistair S. Gadegaard, Nikolaj |
author_sort | Greer, Andrew I. M. |
collection | PubMed |
description | Sol–gel processing is an attractive method for large-scale surface coating due to its facile and inexpensive preparation, even with the inclusion of precision nanotopographies. These are desirable traits for metal orthopaedic prostheses where ceramic coatings are known to be osteoinductive and the effects may be amplified through nanotexturing. However there are a few concerns associated with the application of sol–gel technology to orthopaedics. Primarily, the annealing stage required to transform the sol–gel into a ceramic may compromise the physical integrity of the underlying metal. Secondly, loose particles on medical implants can be carcinogenic and cause inflammation so the coating needs to be strongly bonded to the implant. These concerns are addressed in this paper. Titanium, the dominant material for orthopaedics at present, is examined before and after sol–gel processing for changes in hardness and flexural modulus. Wear resistance, bending and pull tests are also performed to evaluate the ceramic coating. The findings suggest that sol–gel coatings will be compatible with titanium implants for an optimum temperature of 500 °C. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10856-015-5611-3) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4686541 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-46865412015-12-23 Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses Greer, Andrew I. M. Lim, Teoh S. Brydone, Alistair S. Gadegaard, Nikolaj J Mater Sci Mater Med Biomaterials Synthesis and Characterization Sol–gel processing is an attractive method for large-scale surface coating due to its facile and inexpensive preparation, even with the inclusion of precision nanotopographies. These are desirable traits for metal orthopaedic prostheses where ceramic coatings are known to be osteoinductive and the effects may be amplified through nanotexturing. However there are a few concerns associated with the application of sol–gel technology to orthopaedics. Primarily, the annealing stage required to transform the sol–gel into a ceramic may compromise the physical integrity of the underlying metal. Secondly, loose particles on medical implants can be carcinogenic and cause inflammation so the coating needs to be strongly bonded to the implant. These concerns are addressed in this paper. Titanium, the dominant material for orthopaedics at present, is examined before and after sol–gel processing for changes in hardness and flexural modulus. Wear resistance, bending and pull tests are also performed to evaluate the ceramic coating. The findings suggest that sol–gel coatings will be compatible with titanium implants for an optimum temperature of 500 °C. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10856-015-5611-3) contains supplementary material, which is available to authorized users. Springer US 2015-12-21 2016 /pmc/articles/PMC4686541/ /pubmed/26691162 http://dx.doi.org/10.1007/s10856-015-5611-3 Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Biomaterials Synthesis and Characterization Greer, Andrew I. M. Lim, Teoh S. Brydone, Alistair S. Gadegaard, Nikolaj Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title | Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title_full | Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title_fullStr | Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title_full_unstemmed | Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title_short | Mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
title_sort | mechanical compatibility of sol–gel annealing with titanium for orthopaedic prostheses |
topic | Biomaterials Synthesis and Characterization |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4686541/ https://www.ncbi.nlm.nih.gov/pubmed/26691162 http://dx.doi.org/10.1007/s10856-015-5611-3 |
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