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Chitosan-Human Bone Composite Granulates for Guided Bone Regeneration.

Piotr Kowalczyk1,2, Rafał Podgórski1, Michał Wojasiński1

  • 1Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland.

International Journal of Molecular Sciences
|March 3, 2021
PubMed
Summary

Researchers developed a new bone graft material from processed human bone, beta-tricalcium phosphate, and chitosan. This non-immunogenic granulate supports cell growth and is suitable for guided bone regeneration procedures.

Keywords:
allograftscell scaffoldschitosanguided bone regenerationthermal sterilization

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Surgery

Background:

  • Autografts, while ideal, present challenges due to donor site morbidity.
  • Processed human bone offers a non-immunogenic matrix for cell repopulation.
  • Developing effective bone graft substitutes is crucial for treating bone defects.

Purpose of the Study:

  • To develop and evaluate a novel bone graft material in granulate form.
  • To assess the material's biocompatibility and potential for bone regeneration.
  • To determine the suitability of the granulate for surgical applications.

Main Methods:

  • A granulate was fabricated using beta-tricalcium phosphate, deprocessed human bone, and chitosan.
  • Chitosan gelation induced by pH increase was utilized for granulate formation.
  • In vitro studies assessed cytotoxicity, MG63 cell proliferation, and alkaline phosphatase activity.

Main Results:

  • The developed granulate demonstrated non-cytotoxicity.
  • MG63 cell growth was supported on the granulate surface.
  • Alkaline phosphatase activity, a marker of bone growth, was increased.
  • The material proved suitable for thermal sterilization without structural degradation.

Conclusions:

  • The novel granulate material shows promise as a biocompatible and effective bone graft substitute.
  • Its properties make it suitable for guided bone regeneration in non-load-bearing bone voids.
  • The material's stability and ease of application enhance its surgical utility.