Fig. 2

The STL images of two geometries of the 3D-printed bioceramic model were designed as follows: The cylindrical compression sample (a), the concave-topped disk structures views of the bottom (c), and the top (d). The cross-section views of concave-top disk structures also showed the STL image of a horizontal section (e) and a vertical section (f). Furthermore, the two kinds of 3D-printed sintered bioceramic images were obtained. The 3D cylinder bioceramic sample (b), the bottom view (g), and the top view (h) of the concave-top disc structure of the 3D-printed bioceramic scaffold