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Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing
Published on: April 28, 2023
A modified porous titanium sheet prepared by plasma-activated sintering for biomedical applications
Yukimichi Tamaki1, Won Sik Lee, Yu Kataoka
1Department of Oral Biomaterials and Technology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
Journal of Tissue Engineering
|February 26, 2011
Summary
Researchers developed a contamination-free porous titanium scaffold using plasma-activated sintering with a TiN-coated graphite mold. This novel method enhances cell adhesion, making it a promising material for orthopedic bone repair tissue engineering.
Area of Science:
- Biomaterials Science
- Materials Engineering
- Tissue Engineering
Background:
- Porous titanium scaffolds are crucial for bone regeneration.
- Conventional fabrication methods can lead to surface contamination, compromising biocompatibility.
- Titanium carbide (TiC) formation during sintering is a known contamination issue.
Purpose of the Study:
- To develop a contamination-free porous titanium scaffold.
- To evaluate the effect of a TiN-coated graphite mold on titanium sheet properties.
- To assess the cell adhesion and tissue engineering potential of the fabricated scaffolds.
Main Methods:
- Plasma-activated sintering of porous titanium sheets.
- Utilizing an in-house developed TiN-coated graphite mold.
- Surface characterization using techniques like X-ray diffraction (XRD).
- In vitro evaluation of cell adhesion properties.
Main Results:
- Titanium carbide (TiC) peaks were detected on titanium sheets sintered with a non-coated graphite mold, indicating carbon contamination.
- TiC peaks were absent on titanium sheets sintered with the TiN-coated graphite mold.
- The modified titanium sheets exhibited significantly greater cell adhesion compared to bare titanium plates.
- Observed stress fiber formation and cell extension on the modified titanium sheets.
Conclusions:
- Plasma-activated sintering with a TiN-coated graphite mold effectively prevents carbon contamination in porous titanium sheets.
- The contamination-free, modified titanium sheets demonstrate enhanced cell adhesion.
- These findings suggest the potential of this novel titanium scaffold as a biomaterial for orthopedic bone repair.
