Bioactivity of Amorphous Bioactive Glass and Glass-Ceramic in Simulated Body Fluid

摘要

Each of the five batches tested exhibited bioactivity through hydroxyapatite formation on the surface of the samples. Porosity of the samples did not affect surface HAp formation but did have an effect on sample crystallinity. The 800℃ High porosity batch had very good hydroxyapatite formation while still having nearly a 40 MPa compressive strength after 4 weeks. This shows that the overall increased crystallinity does not have adverse effects on hydroxyapatite formation in SBF, but actually appears to increase the hydroxyapatite formation due to more bioactive crystal phases and a less weight percentage of wollastonite compared to the 900℃ High porosity batch. However, this does not suggest how the material will perform in vivo nor does it suggest how quickly the material will resorb.