Protein adsorption and in vitro behavior of additively manufactured 3D-silicon nitride scaffolds intended for bone tissue engineering.

Highly porous scaffolds of SiN are fabricated by direct ink writing method (Robocasting) with a pattern of macroporous cavities of 650-700μm. Two different SiN ink compositions regarding the oxide sintering aids (namely, YO, AlO, and SiO) are tried. Both inks reach solid volume fractions of ~0.