This Invention relates to compositions of Molten glass from biocompatible and absorbable, which include: 60 - 70 wt% SiO2, Na2O 5 - 20% of the weight of the weight of 5 - 25, Cao, MgO 0-10 wt% P2O5, 0.5 - 3.0% by weight, The Weight b1o3 0 - 15, AI2O3 0 - 5% of the weight, and comprising less than 0.005% d And its weight of potassium.Esta invención se refiere a composiciones de vidrio derivado fundido biocompatible y reabsorbible que comprenden: SiO2 60-70% del peso, NA2O 5-20% del peso, CaO 5-25 del peso, MgO 0-10% del peso, P2O5 0.5-3.0% del peso, B1O3 0-15 del peso, AI2O3 0-5% del peso, y que comprenden menos de un 0.005% de su peso de potasio.