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Treating hypersensitivity with fluoride varnish.

A Gaffar1

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

Compendium of Continuing Education in Dentistry (Jamesburg, N.J. : 1995)
|March 23, 2002
PubMed
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Fluoride varnish reduces tooth sensitivity by forming a protective calcium fluoride layer. This layer prevents fluid flow in dentinal tubules, blocking pain signals to nerves.

Area of Science:

  • Dentistry
  • Biomaterials

Background:

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

Purpose of the Study:

  • To explain the mechanism of dentinal hypersensitivity.
  • To highlight the therapeutic effect of fluoride varnish in managing this condition.

Main Methods:

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

Main Results:

  • Stimulation of open dentinal tubules causes fluid pressure changes, activating pain nerves.
  • Fluoride varnish application creates a calcium fluoride layer, occluding tubules and preventing fluid flow.

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Conclusions:

  • Fluoride varnish effectively reduces dentinal hypersensitivity.
  • The formation of a calcium fluoride barrier is the key mechanism for pain reduction.