Gradient Titanium Alloy with Bioactive Hydroxyapatite Porous Structures for Potential Biomedical Applications.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Orthopedic Engineering

Background:

• Hard bone disease affects millions globally, causing significant health and economic burdens.
• Successful bone implants require effective bone regeneration, osseointegration, and inflammation control.
• Current treatments face challenges with implant integration and loosening.

Purpose of the Study:

• To demonstrate an innovative biomaterial system and preparation method for regenerative medicine.
• To develop a composite material promoting bone regeneration and osseointegration.
• To create a material mimicking bone structure for enhanced implant performance.

Main Methods:

• Synthesized pure hydroxyapatite (HAp) via wet precipitation and compared it to commercial products.
• Fabricated Ti/HAp composites using powder metallurgy (PM) with gradient structures (5%HAp/5%CMC and 10%HAp/10%CMC).
• Characterized materials using XRF, XRD, SEM, EDS, PSA, roughness measurements, and Vickers microhardness analysis.

Main Results:

• Achieved high-purity synthesized HAp without impurities.
• Developed gradient Ti/HAp composites with controlled pore sizes (10-100 µm) for cell penetration.
• Introduced HAp to reduce microhardness and enhance bioactivity and osseointegration, mitigating implant loosening.

Conclusions:

• The developed Ti/HAp composite biomaterial shows significant promise for promoting bone growth and improving implant integration.
• The material's gradient structure and bioactivity offer a potential solution for hard bone disease.
• Further biological research is warranted to fully explore its therapeutic potential.