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Dentin permeability and dentin sensitivity.

D H Pashley1

  • 1Department of Oral Biology/Physiology School of Dentistry, Medical College of Georgia, Augusta.

Proceedings of the Finnish Dental Society. Suomen Hammaslaakariseuran Toimituksia
|January 1, 1992
PubMed
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The hydrodynamic theory suggests sensitive dentin allows fluid and bacterial diffusion. Further research is needed to understand how dentinal fluid flow balances this inward movement, impacting dentin sensitivity.

Area of Science:

  • Dentistry
  • Biomaterials Science
  • Oral Biology

Background:

  • The hydrodynamic theory of dentin sensitivity posits that dentin permeability allows fluid and substance movement.
  • Bacterial products may diffuse through dentin tubules to the pulp, causing irritation.
  • Outward dentinal fluid flow acts as a cleansing mechanism, flushing tubules.

Purpose of the Study:

  • To experimentally examine the balance between inward diffusion and outward fluid flow in dentin.
  • To investigate the role of dentinal fluid dynamics in dentin sensitivity.
  • To understand the interaction of exogenous substances with dentinal tubules and pulp.

Main Methods:

  • This study requires experimental examination of fluid dynamics within dentinal tubules.

Related Experiment Videos

  • Methods may involve in vitro models simulating dentin permeability and fluid flow.
  • Analysis of diffusion rates of bacterial products and desensitizing agents will be crucial.

    • Main Results:

    • The inward diffusion of exogenous substances and outward fluid flow represent a dynamic balance.
    • The rate of dentinal fluid flow influences the clearance of irritants from tubules.
    • Further experimental data is required to quantify this balance in dentin sensitivity.

    Conclusions:

    • The interplay between inward diffusion and outward fluid flow is critical to dentin sensitivity.
    • Experimental validation is necessary to fully elucidate the hydrodynamic theory of dentin sensitivity.
    • Understanding this balance could lead to improved treatments for dentin hypersensitivity.