Comparison of bioactive glasses in vitro and in vivo

Leena Hupa, KH Karlsson, Mikko Hupa, HT Aro

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    23 Citations (Scopus)

    Abstract

    Time dependent in vitro and in vivo surface layer formations on two bioactive glasses were compared. The goal was to calibrate the in vitro behaviour with in vivo observations from glass implants in bone and in soft tissue in rat. The follow-up times after implantation were one, four and eight weeks, after which the cross sectional surfaces of the glasses were analyzed with SEM/EDX. In SBF the layer development on the two glasses was similar. Layer thicknesses increased with immersion time. The layers consisted mainly of silica, but hydroxyapatite and a mixed layer of silica and hydroxyapatite formed with prolonged immersion. In vivo experiments indicated that the layer formation followed the same pattern as in vitro. However, in vivo the layers were more diffuse and mixed layers of silica and hydroxyapatite were observed on all samples.
    Original languageUndefined/Unknown
    Pages (from-to)89–92
    Number of pages4
    JournalEuropean Journal of Glass Science and Technology Part a Glass Technology
    Volume51
    Issue number2
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

    Keywords

    • bioactive glass

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