Due to the increasing cases of bone damage and graft demand, bone-repair technology has great social economic benefits manufacturing artificial implants become a focus in domain regenerative therapy. Considering that traditional process cannot effectively control overall size scaffold, diameter shape micropores, interoperability 3D printing emerged as focal point research within realm tissue en...

A coextrusion process was used to fabricate macrochannelled hydroxyapatite (HA). To improve the powder characteristics, the HA powder was calcined at 900°C in air for 1 h. A feedrod composed of HA (shell) and carbon black (core) was coextruded at 120°C through a symmetric 8:1 square reduction die. After the first coextrusion, the individual pieces were bundled, warm-pressed, and then coextruded...