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Treating hypersensitivity with fluoride varnishes.

A Gaffar1

  • 1Colgate-Palmolive Company, Piscataway, New Jersey, USA.

Compendium of Continuing Education in Dentistry (Jamesburg, N.J. : 1995)
|April 15, 1999
PubMed
Summary
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Fluoride varnish reduces tooth sensitivity by creating a protective calcium fluoride layer. This layer blocks fluid flow in dentinal tubules, preventing pain signals from reaching nerves.

Area of Science:

  • Dentistry
  • Biomaterials Science

Background:

  • Dentinal hypersensitivity is a common dental condition characterized by sharp pain.
  • It arises from stimuli activating mechanoreceptor nerves due to fluid movement in open dentinal tubules.

Purpose of the Study:

  • To explain the mechanism of dentinal hypersensitivity.
  • To describe how fluoride varnish can be used to treat this condition.

Main Methods:

  • The study reviews the physiological process of dentinal hypersensitivity.
  • It examines the protective properties of fluoride varnish.

Main Results:

  • Stimulation of open dentinal tubules causes fluid pressure changes, activating pain nerves.
  • Fluoride varnish application results in the formation of a calcium fluoride layer.

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Conclusions:

  • The calcium fluoride layer created by varnish effectively prevents fluid flow within dentinal tubules.
  • This prevention mechanism reduces fluid-induced pressure changes, thereby alleviating dentinal hypersensitivity and pain.