Page 425 - IJB-9-2

International Journal of Bioprinting Design and 3D printing of TPMS breast scaffolds

A B

Figure 5. The fabrication and characterization of triply periodic minimal surface scaffold: (A) Triply periodic minimal surface scaffold printed by fused
deposition modelling; and (B) the porosity and channel diameter of printed scaffolds.
A B

C

Figure 6. The mechanical characterization of the printed triply periodic minimal surface scaffolds: (A) The stress-strain curves of Gyroid scaffolds in single
compression test; (B) the elastic modulus of Gyroid scaffold in single compression and cyclic compression tests; and (C) the stress-strain curves of Gyroid
scaffolds in cyclic compression test. *P < 0.05; **P < 0.01.

has better energy absorption capacity compared with the this stage, the pores of the scaffold have been completely
previous studies (energy absorption window: < 15% of eliminated, the solid parts begin to contact and extrude
strain) [16,36,39,49] . With this buffering function, the TPMS each other, and the structural characteristics almost
scaffold plays a protective role for cell growth and breast disappear. The compression process stopped when the
reconstruction. After the scaffold strain reached 50% strain reached 60%, the scaffold rebounded and structural
strain, the stress of the scaffold increases sharply, and the characteristics restored quickly after unloading. In the
compression begins to enter the densification stage. In whole compression process, the structure maintains stable

Volume 9 Issue 2 (2023) 417 https://doi.org/10.18063/ijb.685