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Biological Compatibility Profile on Biomaterials for Bone Regeneration
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Polydioxanone Membrane Compared with Collagen Membrane for Bone Regeneration.

Lilian Caldas Quirino1, Pedro Henrique de Azambuja Carvalho1, Renato Torres Augusto Neto1

  • 1Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá 1680, Araraquara CEP 14801-903, SP, Brazil.

Polymers
|February 28, 2023
PubMed
Summary
This summary is machine-generated.

The synthetic polydioxanone membrane (Plenum® Guide) effectively supports guided bone regeneration, showing promising results in promoting bone repair in rat calvaria defects. This synthetic option demonstrates comparable efficacy to traditional collagen membranes.

Keywords:
bone regenerationmembranepolydioxanonesynthetic polymer

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Oral and Maxillofacial Surgery

Background:

  • Guided bone regeneration (GBR) utilizes membranes to promote osteopromotion.
  • Polydioxanone membranes offer a synthetic alternative with established medical and dental applications.
  • Evaluating novel synthetic membranes is crucial for advancing GBR techniques.

Purpose of the Study:

  • To compare the efficacy of a synthetic polydioxanone membrane (Plenum® Guide) with a collagen-based membrane (Bio-Gide®) for guided bone regeneration.
  • To assess bone repair in critical-sized defects in rat calvaria using these membranes.
  • To evaluate the osteoconductive potential of the synthetic membrane in conjunction with a bone graft substitute.

Main Methods:

  • Critical-sized bone defects were created in rat calvaria.
  • Defects were treated with either Plenum® Guide or Bio-Gide® membranes, combined with Plenum® Osshp bone graft.
  • Analyses included immunohistochemistry (RUNX2, OPN), gene expression (RUNX2, IBSP, VEGF), histometry, and micro-CT at multiple time points (7, 15, 30, 60 days).

Main Results:

  • The Plenum® Guide group exhibited enhanced immunolabeling for RUNX2 and OPN, and higher gene expression of VEGF and IBSP compared to the Bio-Gide® group.
  • Histometric analysis revealed no significant differences in connective tissue, neoformed bone, or remaining biomaterial percentages between the groups.
  • Micro-CT analysis also showed no statistically significant differences in bone regeneration between the two membrane types.

Conclusions:

  • The synthetic polydioxanone membrane (Plenum® Guide) is an effective option for guided bone regeneration.
  • Plenum® Guide demonstrates comparable bone repair outcomes to the collagen-based Bio-Gide® membrane.
  • The synthetic membrane shows potential for use in bone regeneration applications, offering a viable alternative to existing materials.