Bioactive glass compositions suitable for repeated heat-treatments

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

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    The crystallization tendency for 30 experimental glasses in the system Na2O-K2O-MgO-CaO-B2O3-P2O5-SiO2 was studied with thermal methods, DTA, HSM and XRD. The glasses were also immersed into simulated body fluid for 8 and 72 hours. The formation of the silica-rich gel and calcium phosphate layer on the glasses were analyzed with SEM. The in vitro behavior and crystallization tendency for heat-treated glasses were then related. This information is essential for choosing glass compositions that can be manufactured to desired products with controlled bioactivity for different applications. In general, glasses with low alkali content can tolerate heat-treatment without crystallization but have less initial Si-gel formation ability and show less in vitro bioactivity than glasses with high alkali content.
    Original languageUndefined/Unknown
    Pages (from-to)925–928
    Number of pages4
    JournalKey Engineering Materials
    Volume284-286
    Issue numberBioceramics 17
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Keywords

    • bioactivity
    • in vitro

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