Fig. 5From: Challenges on optimization of 3D-printed bone scaffoldsa Percentages of different 3D printing approaches investigated for bone scaffolds; b percentages of 3D bioprinting uses in different tissue engineering applications, and c comparison of uses of different 3D bioprinting approaches over time (based on Scopus search, type of document was article, keywords for a 3D printing and bone scaffold and the technique name, b 3D bioprinting with each application name, and c 3D bioprinting and name of approach)Back to article page