TEST OF BIOACTIVITY IN FOUR DIFFERENT GLASSES

A special preparation was carried out on granules of the glasses under investigation before their implantation in rabbit's muscles, so as to understand how their bioactivity evolves, to know what the ions involved in the diftirsion are and how the diflirsion is directed. At the explantation the materials and the surrounding tissues were fixed and prepared for the scanning electron microscopic examinations and the energy dispersive analyses. The results show the ditference in degradation of the glasses that induce some considerations on the mechanism of bioactivity