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Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
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Synthetic bone: Design by additive manufacturing.

D Barba1, E Alabort2, R C Reed3

  • 1Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom; School of Aeronautics and Space Engineering-ETSIAE, Polytechnic University of Madrid, 28040 Madrid, Spain.

Acta Biomaterialia
|August 9, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed 3D printed metallic lattices for better bone implants. These structures offer improved bio-mechanical matching and osseointegration for enhanced medical outcomes.

Keywords:
3D-printingBiomaterialImplantsLatticeLatticesOsseo-integration

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Additive Manufacturing

Background:

  • Current porous implant materials face challenges in manufacturing accuracy and bio-mechanical matching.
  • Designing implants with properties tailored to bone is crucial for successful integration and patient outcomes.

Purpose of the Study:

  • To explore the design freedom offered by additive manufacturing for creating novel trabecular-like metallic lattices.
  • To develop conceptual implant structures with superior bio-mechanical matching and osseointegration capabilities.
  • To create implant design maps for tailored bone substitutes, focusing on spine fusion devices.

Main Methods:

  • 3D printing of Ti-6Al-4V alloy lattices using a laser-bed process.
  • High-resolution computed X-ray tomography for assessing manufacturing accuracy.
  • Experimental measurement and evaluation of mechanical properties (stiffness and strength).

Main Results:

  • Demonstrated feasibility and accuracy of manufacturing complex metallic lattices.
  • Characterized mechanical properties, showing potential for bone stiffness-matching.
  • Identified optimal pore structures for bone ingrowth and manufacturability.

Conclusions:

  • A novel bio-engineering design methodology for additive manufactured biomedical lattices was presented.
  • The developed lattices address critical limitations of existing porous implant materials.
  • These concepts offer potential for superior medical outcomes in devices like intervertebral fusion implants.