SCHOTT Vitryxx® Bioactive Glass
SCHOTT Vitryxx® Bioactive Glass Technology
In an aqueous environment a rapid ion exchange between the sodium ion of the bioactive glass matrix and the hydrogen ion from the water takes place. This exchange generally leads to an increase in the pH of the surrounding solution, which can be substantial for finely grained bioactive glass powders having high surface to volume ratios.
The fast release of sodium ions is accompanied by a somewhat slower release of other species like calcium ions, silica and phosphorous. These releases are caused by a very slow dissolution of the glass surface. Under certain conditions in solution, these species will precipitate onto the glass surface and other nearby surfaces, to form calcium and phosphorous containing layers. These surface layers can transform into crystalline hydroxycarbonate apatite (HCA) – the chemical and structural equivalent of bone material. The ability of bioactive glass to build such a surface is the reason for the bonding ability to human tissue and can be seen as a measure of the “bioactivity” of the glass.
Features / Specifications
SCHOTT Vitryxx® Bioactive Glass is a fine white powder that is odorless and tasteless. Due to its hydrophilic properties it must be stored dry.
SCHOTT offers Vitryxx® Bioactive Glass in the following standard grain size. Customized grain sizes are also available upon request.
SM4.0 specified by d50: (4.0 ± 1.0) μm d95: ≤ 20 μm
Maximum content of microorganisms:
Total viable count ≤ 100 cfu/g
Yeasts and molds ≤ 100 cfu/g
Forms of Supply and Product Packaging
Vitryxx® is currently available in two forms.