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Ceramic Omnidirectional Bioprinting in Cell-Laden Suspensions for the Generation of Bone Analogs
Published on: August 8, 2022
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3D Printed scaffolds with bactericidal activity aimed for bone tissue regeneration.
Tiago R Correia1, Daniela R Figueira1, Kevin D de Sá1
1CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal.
International Journal of Biological Macromolecules
|June 9, 2016
Summary
New 3D bone scaffolds made of Tricalcium phosphate (TCP) and Sodium Alginate (SA) show promise for bone regeneration. Direct incorporation of silver nanoparticles (AgNPs) provides enhanced mechanical properties and bactericidal activity, improving suitability for bone tissue engineering.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Nanotechnology
Background:
- Bone disorders are increasing globally, particularly in aging populations, leading to reduced quality of life.
- Current bone defect treatments like autografts, allografts, and xenografts have limitations including availability, immune rejection, and implant failure.
- Bacterial colonization of bone substitutes is a major cause of implant rejection, necessitating improved bone regeneration strategies.
Purpose of the Study:
- To develop and evaluate novel 3D Tricalcium phosphate (TCP)/Sodium Alginate (SA) composite scaffolds for bone tissue regeneration.
- To investigate the effect of incorporating silver nanoparticles (AgNPs) using two different methods on scaffold properties.
- To identify the most suitable scaffold composition and fabrication method for enhanced bone regeneration.
Main Methods:
- Fabrication of 3D Tricalcium phosphate (TCP)/Sodium Alginate (SA) scaffolds using Rapid Prototyping (RP).
- Functionalization of scaffolds with silver nanoparticles (AgNPs) via two distinct incorporation techniques.
- Evaluation of scaffold properties including mechanical strength, biocompatibility, and bactericidal activity.
Main Results:
- The composite scaffolds exhibited appropriate mechanical properties for bone tissue regeneration.
- Scaffolds functionalized with AgNPs demonstrated significant biocompatibility.
- Direct incorporation of AgNPs resulted in effective bactericidal activity against implant-associated bacteria.
Conclusions:
- 3D Tricalcium phosphate (TCP)/Sodium Alginate (SA) scaffolds produced by Rapid Prototyping (RP) are suitable for bone tissue engineering.
- Direct incorporation of silver nanoparticles (AgNPs) into TCP/SA scaffolds enhances their suitability for bone regeneration.
- These AgNP-functionalized scaffolds offer a promising solution to overcome limitations of current bone defect treatments, including bacterial infection.
