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Updated: Aug 13, 2026
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
Metal-based putty implant functionalized with copper nanoparticles for bone tissue regeneration
Rethinam Senthil1, Pelluru Geetha Sravanthy1
1Nano-Bioproducts Research Lab (NBRL), Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu, India.
This study created a novel bone putty using sodium alginate, hydroxyapatite, and copper nanoparticles (SA/HA/CuNPs). The implant demonstrated excellent antibacterial, mechanical, and biocompatibility properties, showing great potential for bone tissue engineering and regeneration.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Tissue Engineering
Background:
- Bone defects pose significant clinical challenges.
- Current bone graft substitutes have limitations.
- Advanced biomaterials are needed for effective bone regeneration.
Purpose of the Study:
- To develop and evaluate a novel sodium alginate/hydroxyapatite/copper nanoparticle (SA/HA/CuNPs) putty implant.
- To assess the structural, mechanical, antibacterial, and cytocompatibility properties of the developed putty.
- To investigate its potential for bone tissue engineering applications.
Main Methods:
- Green synthesis of copper nanoparticles (CuNPs).
- Characterization of CuNPs and the SA/HA/CuNP putty using UV-Vis, FTIR, XRD, and FESEM.
- Evaluation of porosity, biomineralization, antioxidant activity, antibacterial efficacy, mechanical strength, and cytocompatibility.
Main Results:
- The putty exhibited a porous structure with enhanced biomineralization.
- Significant antioxidant and strong antibacterial activity against gram-positive and gram-negative bacteria was observed.
- Mechanical testing revealed suitable tensile and compressive strengths.
- Cytocompatibility studies showed >86% cell viability with favorable live/dead staining.
Conclusions:
- The SA/HA/CuNP putty implant possesses promising properties for bone regeneration.
- The developed material demonstrates potential as an effective scaffold for bone tissue engineering.
- Further in vivo studies are warranted to confirm its efficacy in bone defect repair.
