<scp>PBP</scp>‐based bioprinting of hydrogels for biomedical applications

Three-dimensional (3D) printing of hydrogels to form complex structures has been widely used in tissue engineering. Projection-based 3D (PBP) faster printing, lower cell damage, and higher resolution compared with other methods, providing a potential strategy for elaborate hydrogel structures. In this review, we introduced the composition process PBP. We then discuss study PBP, including chemical structure modification property optimization. More importantly, highlight applications PBP-based regenerative medicine engineering, current challenges future prospects hydrogels. Ideas are provided bioinks, related fields.