Elaboration of macroporous bioactive glass for bone substitutes

摘要

The process of elaboration of synthetic osseous substitutes of perfectly controlled porous architecture allows to synthesize macroporous bioceramics such as hydroxyapatite, alumina and calcium phosphate. This process was applied to the elaboration of bioactive glass of molar chemical composition 43.65SiO_2-22.8CaO- 30.55Na_2O-3P_2O_5 in order to obtain a macroporous material. A study of sintering of this bioactive glass, named P3C2, was carried out which makes it possible to find a compromise between the cycles of heat treatments and the granulometry of glass powder, in order to preserve the vitreous character of macroporous material.