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Alginate-hydroxyapatite scaffolds: A comprehensive characterization study.

Saanvi Gupta1, Suganya Panneer Selvam1, Ramya Ramadoss1

  • 1Department of Oral Biology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamilnadu, India.

Journal of Oral Biology and Craniofacial Research
|April 11, 2025
PubMed
Summary
This summary is machine-generated.

Alginate-hydroxyapatite (Alg-HA) scaffolds show promise for dentin regeneration due to their biocompatibility and porous structure. These advanced biomaterials exhibit controlled degradation and excellent hemocompatibility, supporting cellular functions for tissue repair.

Keywords:
AlginateBiocompatibilityBiosynthesisDentinHydroxyapatiteRegenerationScaffolds

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Dental Research

Background:

  • Alginate is recognized for its biocompatibility and tunable properties in regenerative applications.
  • Hydroxyapatite incorporation enhances alginate scaffolds to mimic the natural dentin extracellular matrix.
  • This biomimicry promotes crucial cellular activities like adhesion, proliferation, and mineralization.

Purpose of the Study:

  • To synthesize and characterize alginate-hydroxyapatite (Alg-HA) composite scaffolds.
  • To evaluate the structural, chemical, and biological properties of Alg-HA scaffolds for dentin regeneration.
  • To assess the in vitro degradation and hemocompatibility of the developed scaffolds.

Main Methods:

  • Alg-HA scaffolds were fabricated using sodium alginate and synthesized hydroxyapatite via freeze-drying.
  • Characterization involved X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Analysis (EDAX).
  • In vitro degradation and hemocompatibility were assessed using simulated body fluid (SBF) and hemolysis assays, respectively.

Main Results:

  • XRD and FTIR confirmed successful HA incorporation and composite formation.
  • SEM revealed a porous, interconnected structure with HA particles, suitable for cell infiltration.
  • Controlled degradation (80% mass loss by day 3) and minimal hemolysis (<2%) demonstrated favorable stability and blood compatibility.

Conclusions:

  • Alg-HA scaffolds possess excellent structural, chemical, and biological properties for dentin regeneration.
  • The porous architecture and HA integration support cell proliferation and mineralization.
  • High hemocompatibility and controlled degradation indicate significant potential for clinical applications in regenerative dentistry.