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Related Experiment Video

Updated: Sep 14, 2025

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Multifunctional Three-Layer Collagen-Based Membrane for Periodontal Guided Tissue Regeneration.

Sara Takallu1, Zeinab Karimi2, Hooman Khorshidi3

  • 1Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran.

ACS Biomaterials Science & Engineering
|July 21, 2025
PubMed
Summary
This summary is machine-generated.

A new guided tissue/bone regeneration membrane (GTBRM) with silver and β-TCP nanoparticles shows promise for periodontal regeneration. It offers antibacterial and osteogenic properties, improving bone and soft tissue healing in preclinical models.

Keywords:
GTR/GBR membranemultifunctional designnanoparticlesperiodontal regenerationperiodontitistissue engineering

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Area of Science:

  • Biomaterials Science
  • Periodontology
  • Regenerative Medicine

Background:

  • Periodontal defects from periodontitis require surgical regeneration techniques like guided tissue regeneration (GTR) and guided bone regeneration (GBR).
  • Infections pose a significant risk to the success of conventional GTR/GBR membranes, necessitating improved designs.
  • Existing membranes lack multifunctional capabilities to simultaneously address infection and promote regeneration.

Purpose of the Study:

  • To engineer and characterize a novel multifunctional guided tissue/bone regeneration membrane (GTBRM).
  • To evaluate the antibacterial, osteogenic, and regenerative potential of the GTBRM in vitro and in vivo.
  • To assess the GTBRM's suitability for enhancing periodontal regeneration.

Main Methods:

  • Fabrication of GTBRM with collagen layers, silver nanoparticles (AgNPs), β-tricalcium phosphate nanoparticles (β-TCP NPs), and a poly(vinyl alcohol)/cellulose nanocrystal core.
  • Physicochemical characterization using SEM, EDAX, XRD, FTIR, tensile testing, and biodegradation analysis.
  • In vitro biocompatibility, cell proliferation, and osteogenic differentiation assays with MG-63 cells, HGF, and BMSCs; antibacterial tests against E. faecalis and F. nucleatum.
  • In vivo evaluation in rat radial bone and oral defect models to assess bone and soft tissue regeneration.

Main Results:

  • The GTBRM exhibited suitable physicochemical properties and controlled biodegradation.
  • In vitro studies confirmed GTBRM's biocompatibility, enhanced cell adhesion, proliferation, and osteogenic differentiation.
  • AgNPs demonstrated significant antibacterial activity, while β-TCP NPs promoted osteoblast activity.
  • In vivo studies showed GTBRM significantly enhanced osteogenesis and buccal soft tissue regeneration.

Conclusions:

  • The developed GTBRM demonstrates multifunctional capabilities including biocompatibility, space maintenance, antibacterial properties, and osteoconductivity.
  • These preclinical findings suggest GTBRM's potential as an advanced material for periodontal regeneration.
  • Further clinical studies are warranted to confirm the translational potential and efficacy of GTBRM.