The effect of pore geometry on the mechanical properties of 3D-printed bone scaffold due to compressive loading

Bone substitutes are derived from biological products or synthetic bone substitutes such as ceramics, polymers, metals, and organic or non-organic bone substitutes. Emerging three-dimensional (3D)-printing technologies are enabling the fabrication of bone scaffold with the precise specifications. 3D...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-02, Vol.1051 (1), p.12016
Main Authors: Jahir-Hussain, M J, Maaruf, N A, Esa, N E F, Jusoh, N
Format: Article
Language:English
Subjects:
Biological products
Biological properties
Biomedical materials
Compressive strength
Finite element method
Mechanical properties
Polylactic acid
Porous materials
Scaffolds
Stiffness
Substitute bone
Surgical implants
Three dimensional printing
Tissue engineering
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Summary:Bone substitutes are derived from biological products or synthetic bone substitutes such as ceramics, polymers, metals, and organic or non-organic bone substitutes. Emerging three-dimensional (3D)-printing technologies are enabling the fabrication of bone scaffold with the precise specifications. 3D-printing allows controlled material placement for configuring porous tissue scaffolds with tailored properties such as mechanical stiffness, nutrient transport, and biological growth. Therefore, bone scaffolds with good biological and mechanical properties are needed to be used as a bone substitute in bone tissue engineering. However, inadequate mechanical strength is the major problem in current bone scaffolds fabrication. Therefore, the aim of this study is to design and to simulate the mechanical properties of 3D printed polylactic acid (PLA) bone scaffold with different pore geometries, which are circular, square, hexagonal and triangular. The scaffolds were designed and were simulated by using SolidWorks in determining the mechanical properties. Finite Element Analysis (FEA) of the PLA bone scaffold indicates that scaffolds with hexagonal pore shape has compressive strength of 241.0 MPa, which is matches with the human bone properties.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1051/1/012016