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3D-Printed Polycaprolactone-Based Containing Calcium Zirconium Silicate: Bioactive Scaffold for Accelerating Bone
Hosein Emadi1, Mostafa Baghani1, Maryam Masoudi Rad2
1School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 14176-14411, Iran.
Polymers
|May 25, 2024
Summary
This study developed 3D-printed calcium zirconium silicate/polycaprolactone scaffolds for bone repair. Adding calcium zirconium silicate nanoparticles significantly improved mechanical strength and cell viability, showing promise for bone tissue engineering.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Materials Science
Background:
- Urgent clinical need for effective bone defect repair strategies.
- Limitations of current bone graft materials and regenerative approaches.
- Potential of composite scaffolds for enhanced bone regeneration.
Purpose of the Study:
- To develop and characterize novel calcium zirconium silicate/polycaprolactone composite scaffolds.
- To evaluate the mechanical, thermal, and biological properties of these scaffolds for bone tissue engineering.
- To assess the potential of 3D-printed scaffolds for bone defect repair.
Main Methods:
- Fabrication of polycaprolactone (PCL) scaffolds incorporating varying concentrations of calcium zirconium silicate (CZS) nanoparticles using melt extrusion-based 3D printing.
- Characterization of scaffold properties including porosity, mechanical strength (compressive strength), thermal properties (melting point, crystallization temperature, degradation temperature), and apatite formation in simulated body fluid (SBF).
- In vitro cell viability assessment using MTT assay with MG63 cells.
Main Results:
- Scaffolds exhibited porosity between 55-62%.
- Increasing CZS content from 0 to 40 wt.% significantly enhanced compressive strength from 2.8 to 10.9 MPa.
- Apatite formation in SBF and MG63 cell viability (~29% increase in PC40) were notably improved with higher CZS content.
Conclusions:
- Successfully fabricated 3D-printed PCL/CZS composite scaffolds with enhanced mechanical and biological properties.
- The addition of CZS nanoparticles improved compressive strength, bioactivity, and cellular response.
- These composite scaffolds demonstrate significant potential as implantable materials for bone tissue engineering applications.
