A degradable phosphate glass (ICEL) and a bioactive silicate glass (CEL2) were mixed in
different ratios (wt-%: 100%ICEL, 70%ICEL–30%CEL2, 30%ICEL–70%CEL2, 100%CEL2; codes
100-0, 70-30, 30-70, 0-100) and then co-sintered to obtain three-dimensional porous scaffolds by
gel casting foaming. Thermal analyses were carried out on the glass mixtures and were used as a
starting point for the optimisation of the scaffold sintering treatment. The microcomputed
tomography and field emission scanning electron microscope analyses allowed the selection of
the optimal sintering temperature to obtain an adequate structure in terms of total and open
porosity. The scaffolds showed an increasing solubility with increasing ICEL glass content, and for
30-70 and 0-100, the precipitation of hydroxyapatite in simulated body fluid was observed. In vitro
tests indicated that all the scaffolds showed no cytotoxic effect. The co-sintering of silicate and
phosphate glasses showed to be a promising strategy to tailor the scaffold osteoconductivity,
degradation and bioactivity.