Highly Porous 3D Printed Tantalum Scaffolds Have Better Biomechanical and Microstructural Properties than Titanium Scaffolds. (28th September 2021)

• Record Type: Journal Article
• Authors: Fan, Huaquan; Deng, Shu; Tang, Wentao; Muheremu, Aikeremujiang; Wu, Xianzhe; He, Peng; Tan, Caihua; Wang, Guohua; Tang, Jianzhong; Guo, Kaixuan; Yang, Liu; Wang, Fuyou
• Other Names: Todros Silvia Academic Editor.
• Is Part Of: BioMed research international. Volume 2021(2021)
• Publication Date: 2021-09-28
• Subjects: Medicine -- Periodicals; Biology -- Periodicals; Biotechnology -- Periodicals; Life sciences -- Periodicals; 610.5
• DOI: 10.1155/2021/2899043
• Languages: English
• ISSNs: 2314-6133

Abstract

Abstract : Objective . To test the biomechanical properties of 3D printed tantalum and titanium porous scaffolds. Methods . Four types of tantalum and titanium scaffolds with four alternative pore diameters, #1 (1000-700 μ m), #2 (700-1000 μ m), #3 (500-800 μ m), and #4 (800-500 μ m), were molded by selective laser melting technique, and the scaffolds were tested by scanning electronic microscope, uniaxial-compression tests, and Young's modulus tests; they were compared with same size pig femoral bone scaffolds. Results . Under uniaxial-compression tests, equivalent stress of tantalum scaffold was 411 ± 1.43 MPa, which was significantly larger than the titanium scaffolds (P < 0.05 ). Young's modulus of tantalum scaffold was 2.61 ± 0.02 GPa, which was only half of that of titanium scaffold. The stress-strain curves of tantalum scaffolds were more similar to pig bone scaffolds than titanium scaffolds. Conclusion . 3D printed tantalum scaffolds with varying pore diameters are more similar to actual bone scaffolds compared with titanium scaffolds in biomechanical properties.