Interaction of a plasma-sprayed hydroxyapatite coating in contact with human osteoblasts and culture medium
| Autor: | J. Rieu, Nathalie Demonet, Jacques Frey, Béatrice Labat, Aline Rattner, Annette Chamson, Jean-Luc Aurelle |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Calcium Phosphates
Ceramics Materials science Biocompatibility Surface Properties Biomedical Engineering chemistry.chemical_element Mineralogy Calcium phosphate ceramics engineering.material Calcium Biomaterials Coating Coated Materials Biocompatible X-Ray Diffraction Materials Testing medicine Humans Ceramic Dissolution Aerosols Osteoblasts Osteoblast Culture Media medicine.anatomical_structure Durapatite chemistry Chemical engineering Solubility visual_art Calcium Compounds visual_art.visual_art_medium engineering |
| Zdroj: | Journal of biomedical materials research. 46(3) |
| ISSN: | 0021-9304 |
| Popis: | The loss of calcium from plasma-sprayed calcium phosphate ceramics (CPCs) on bioinert metal substrate (Ti-6Al-4V) immersed in cell culture medium with or without human osteoblast culture was measured. The ceramics were a CPC and a duplex system composed of a CPC layer on an alumina coating. The dissolution of calcium compounds was monitored by measuring the calcium leaked from the coatings into the culture medium in 15 days. Calcium was measured by flame photometry. The surfaces of the ceramics exposed to the culture medium and in contact with osteoblasts were analysed by X-ray diffraction (XRD). The dissolution process occurred in the first 6 days of contact, but the calcium released into the culture medium was only a small fraction of the calcium content of the coatings. The presence or absence of osteoblasts on the surface of the ceramics did not make significant difference for the calcium release. The XRD spectra of the ceramics before and after immersion and in contact with cells did not show a significant change in the compounds of the coatings. |
| Databáze: | OpenAIRE |
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