Bioactive Oxynitride Glasses

What is it about?

Bioactive glasses are able to bond to bone through formation of hydroxyapatite in body fluids. However, because of their poor strength, use is restricted to non-load-bearing applications. Addition of nitrogen increases properties of silicate glasses. In this paper it is shown that N increases hardness, elastic modulus and gracture resistance as a result of extra crosslinking in the glass structure. Initial assessment of bioactivity suggests that varying the N content may allow tailoring of different levels of bioactivity.

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