A preliminary study on the mechanical characteristics of the titanium scaffolds with three-dimensional mesh structure fabricated by electron beam melting
10.3760/cma.j.issn.1002-0098.2016.11.004
- VernacularTitle:三维打印三维网状钛合金支架的生物力学性能初探
- Author:
Rongzeng YAN
1
;
Yongfeng LI
;
Chao WANG
;
Runxin LI
;
Zhiwei LIU
;
Min HU
Author Information
1. 武警江西省总队医院口腔科
- Keywords:
Mandibular prosthesis;
Titanium;
Three dimensional printing;
Electron beam melting
- From:
Chinese Journal of Stomatology
2016;51(11):656-660
- CountryChina
- Language:Chinese
-
Abstract:
Objective To examine the biomechanical properties of three-dimensional(3D) printed electron beam melting(EBM) Ti-6AI-4V mesh as scaffold for mandibular repairment.Methods We fabricated Ti-6Al-4V samples of different structures with strut,sheet and 3D mesh scaffolds(a controllable diameter 0.35,0.50,0.70 mm,distribution density:intensive sparse) by EBM process.The mechanical properties of these structures were examined by X-ray energy dispersive spectrum(EDS),uniaxial tensile test,three-point bending test,under compression load and compared with their different microstructure and mechanical properties.Results Compressive deformation behavior of these cellular structures exhibited brittle character that had a typical irregular plateau region in the stress-strain curves.The mesh of larger diameter(d=0.70 mm) showed higher specific strength than the meshs of small diameter(d=0.35 mm) did,and the other 3D mesh under the same condition showed identical specific stiffness.Conclusions EBM was successfully used to fabricate novel 3D mesh Ti-6Al-4V structures for applications.By optimizing the buckling and bending deformation,Ti-6Al-4V cellular solids with high strength,low modulus.Furthermore,the results of mechanical property and chemistry composition showed that the scaffold could completely satisfy the requirement of hard tissue repairment.
