Abstract
Self‐setting calcium phosphate cement (CPC) scaffold with interconnected macropores is hard to prepare without compromising its hydration reaction. Herein, an indirect 3D printing method is using to prepare CPC scaffolds. Detailedly, polycaprolactone (PCL)‐sacrificed models with different strut sizes are first printed by 3D plotting technique, and then the CPC pastes are perfused into the PCL models and then self‐setting. After the removal of the PCL models, the CPC scaffolds with different pore sizes are obtained. It is showed in the results that the prepared CPC scaffolds had uniform shape and 3D interconnected macropore structure. Meanwhile, the compressive strength of CPC scaffolds all meets the requirements of repairing cancellous bone. More interestingly, the CPC scaffold with about 300 μm in macropore size is more conducive to the ingrowth and osteogenesis differentiation of mouse bone marrow mesenchymal stem cells. As a whole, the indirect 3D printing method is a promising strategy for preparing CPC scaffolds, which are hard to form directly by 3D printing technique.
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