An integrated and heterogeneous soft-hard construct was successfully assembled as a lock-key structure by 3D cell printing. This 3D printed soft-hard construct has the potential to be a customized plug in alveolar ridge preservation.

reference:

Zhang, S., Li, Q., Liu, P., Lin, C., Tang, Z., & Wang, H. L. (2021). Three-dimensional cell printed lock-key structure for oral soft and hard tissue regeneration. Tissue Engineering Part A.