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Related Experiment Videos

Oriented cell and fiber attachment systems in vivo

R A Lowenguth1, A M Polson, J G Caton

  • 1Department of Periodontology, Eastman Dental Center, Rochester, NY.

Journal of Periodontology
|May 1, 1993
PubMed
Summary

Demineralizing dentin surfaces before approximation in vivo promotes cell and fiber attachment. This creates an oriented fiber system similar to periodontal ligament, suggesting substrate approximation is key for regeneration.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Tissue Engineering

Background:

  • Cell and fiber attachment systems are crucial for tissue regeneration.
  • Demineralized dentin has shown potential as a biomaterial scaffold.
  • Understanding in vivo responses to approximated dentin surfaces is needed.

Purpose of the Study:

  • To investigate the development of oriented cell and fiber attachment systems.
  • To evaluate the effect of demineralized dentin surface approximation in vivo.
  • To compare demineralized versus non-demineralized dentin surfaces.

Main Methods:

  • Approximation of demineralized and non-demineralized dentin cylinder surfaces in vivo.
  • Transcutaneous implantation of specimens into rat backs.

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  • Histologic and histometric analysis at 1 and 10 days post-implantation.

    • Main Results:

    • Demineralization with citric acid enhanced cell attachment at 1 and 10 days.
    • An oriented fiber attachment system developed between demineralized approximated surfaces by 10 days.
    • The fiber system morphology resembled a periodontal ligament with perpendicular fiber insertion.

    Conclusions:

    • Spatial approximation of appropriate substrates promotes cell and fiber orientation.
    • Demineralization of dentin surfaces facilitates oriented attachment development.
    • Approximating substrates may be beneficial for regenerating functionally oriented attachment systems clinically.