Design of new gradient scaffolds based on triply periodic minimal surfaces and study on its mechanical, permeability and tissue differentiation characteristics.
10.7507/1001-5515.202102054
- Author:
Zhiqiang LIU
1
;
He GONG
1
;
Jiazi GAO
1
;
Zhehao LIU
1
;
Shanshan ZOU
1
;
Sujing TIAN
1
Author Information
1. Department of Mechanics, College of Mechanical and Aerospace Engineering, Jilin University, Changchun 130000, P.R.China.
- Publication Type:Journal Article
- Keywords:
flow property;
gradient triply periodic minimal surfaces scaffold;
permeability;
structural strength;
tissue differentiation
- MeSH:
Bone and Bones;
Humans;
Permeability;
Porosity;
Tissue Engineering;
Tissue Scaffolds
- From:
Journal of Biomedical Engineering
2021;38(5):960-968
- CountryChina
- Language:Chinese
-
Abstract:
In order to establish a bone scaffold with good biological properties, two kinds of new gradient triply periodic minimal surfaces (TPMS) scaffolds, i.e., two-way linear gradient G scaffolds (L-G) and D, G fusion scaffold (N-G) were designed based on the gyroid (G) and diamond (D)-type TPMS in this study. The structural mechanical parameters of the two kinds of scaffolds were obtained through the compressive simulation. The flow property parameters were also obtained through the computational fluid dynamics (CFD) simulation in this study, and the permeability of the two kinds of scaffolds were calculated by Darcy's law. The tissue differentiation areas of the two kinds of scaffolds were calculated based on the tissue differentiation theory. The results show that L-G scaffold has a better mechanical property than the N-G scaffold. However, N-G scaffold is better than the L-G scaffold in biological properties such as permeability and cartilage differentiation areas. The modeling processes of L-G and N-G scaffolds provide a new insight for the design of bone scaffold. The simulation in this study can also give reference for the prediction of osseointegration after the implantation of scaffold in the human body.
