| abstract |
A rapidly soluble vitreous or vitreous-crystalline material has the following composition (in percent by weight) before combustion: 20 - 55 CaO, 5 - 25 Na2O, 0.01 - 15 K2O, 0 - 15 MgO, 30 - 50 P2O5 , 0 -15 SiO2, 0 - 40 Na2SO4 and/or K2SO4. This new material is obtained in vitreous or vitreous-crystalline form, depending on the cooling conditions. As a glass-ceramic with spontaneous crystallization, it contains the rhenanite phase, the ''A'' phase, the ''X'' phase and/or their mixed crystals. The material is both bio-active and biocompatible and dissolves quickly. It is used directly or with other materials as an implant for a temporary bone prosthesis and to induce the growth of connective tissue, as well as as fertilizer and fodder. |