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Title

Influence of Sterilization Techniques on the In Vitro Bioactivity of Pseudowollastonite

AuthorsAza, Piedad N. de; Aza Moya, Antonio H. de ; Herrera, A.; López-Prats, F. A.; Pena, Pilar
Issue Date2006
CitationJ. Am. Ceram. Soc., 89 [8] 2619–2624 (2006)
AbstractThe purpose of this study was to investigate the effect of four sterilization methods (Steam autoclave, Hydrogen peroxide plasma, Ethylene oxide, and Gamma sterilization) on the surface chemistry and in vitro bioactivity of polycrystalline pseudowollastonite (psW). psW samples obtained by solid-state reaction sintering were sterilized and soaked in Kokubo et al.’s proposed simulated body fluid (SBF) up to 30 days. The sterilization procedure was found to result in no significant chemical changes in the surface of the samples. On the other hand, a Ca/P layer, of different thickness, identified as hydroxyapatite (HA) like, was developed on all the samples after soaking, although the Ethylene oxide-sterilized samples present a non-homogeneous and B68% thinner HA layer. The psW samples before soaking were analyzed by X-ray diffraction, raman spectroscopy, and scanning electron microscopy (SEM). The interfacial reaction product was examined by SEM fitted with an energy-dispersive X-ray analyzer. Additionally, changes in ionic concentrations at the psW/SBF interface were measured
Publisher version (URL)DOI: 10.1111/j.1551-2916.2006.01108.x
URIhttp://hdl.handle.net/10261/19797
DOI10.1111/j.1551-2916.2006.01108.x
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