In vitro behavior of fiber bundles and particles of bioactive glasses

D Zhang, H Arstila, E Vedel, H Ylanen, Leena Hupa, Mikko Hupa

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    In vitro reactions of bundles of fibers with diameters 20-500 mu m and crushed glasses of fractions 500-800 mu m were compared with the reactions of plates of the same bioactive glasses. The samples were immersed in simulated body fluid (SBF) for 2-7 days. After immersion the changes on the surfaces of the samples were observed by SEM/EDXA. Fir Layer formation on the glass surface was found to vary with glass composition, sample shape and local condition of single particle/fiber. However, only some fibers or particles formed similar in vitro reaction layers as the plates. The product form did not change the in vitro bioactivity of particles or fibers exposed to the bulk immersion solution. When the glasses were used as fiber bundles or particle beds, the packing degree and the flow of body fluids within the system interfered with the reactivity. Also a clear correlation between in vivo layer formation in bone and in vitro of the glass plates could be found.
    Original languageUndefined/Unknown
    Pages (from-to)225–228
    Number of pages4
    JournalKey Engineering Materials
    Issue number1. Bioceramics
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed


    • fiber bundles
    • in-vitro reaction
    • particle
    • SBF

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