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Published on: June 27, 2014
Prototype Orthopedic Bone Plates 3D Printed by Laser Melting Deposition
Diana Chioibasu1,2, Alexandru Achim3, Camelia Popescu4
1Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania. diana.chioibasu@inflpr.ro.
This study demonstrates the successful 3D printing of Ti6Al4V orthopedic bone plates using laser melting deposition. The resulting implants are dense, cytocompatible, and exhibit a unique biphasic structure suitable for medical applications.
Area of Science:
- Biomaterials Engineering
- Additive Manufacturing
- Orthopedic Implants
Background:
- Laser melting deposition (LMD) is primarily used for industrial parts, with limited reported applications in the medical sector.
- Ti6Al4V is a common titanium alloy for orthopedic implants due to its biocompatibility and mechanical properties.
Purpose of the Study:
- To 3D print Ti6Al4V orthopedic bone plates using LMD.
- To optimize LMD parameters for fabricating dense and high-resolution implants.
- To evaluate the material properties and in vitro cytocompatibility of the 3D printed implants.
Main Methods:
- Optimized laser power, scanning speed, and powder feed rate for LMD.
- Fabricated Ti6Al4V bone plates, focusing on scanning direction for resolution.
- Characterized material density, microstructure (optical microscopy, XRD), elemental composition (EDS), and surface uniformity.
- Performed in vitro cytocompatibility tests using osteoblast-like cell cultures.
Main Results:
- Achieved continuous deposition with minimal defects by tuning LMD parameters.
- 3D printed plates exhibited dense structures with no visible pores or cracks.
- Material analysis revealed a biphasic α+β structure, uniform elemental distribution, and composition similar to the starting powder.
- In vitro tests confirmed the cytocompatibility of the LMD-fabricated Ti6Al4V implants.
Conclusions:
- Laser melting deposition is a viable technique for producing dense, cytocompatible Ti6Al4V orthopedic implants.
- Optimized LMD process parameters and scanning direction are crucial for implant quality and resolution.
- The unique biphasic structure and uniform composition suggest potential for enhanced osseointegration and clinical performance.
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