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ARAB DENTAL  •  ISSN 1861-8251

ARAB DENTAL 24 (2011), No. 4     15. Dec. 2011
ARAB DENTAL 24 (2011), No. 4  (15.12.2011)

Page 50-57, Language: Arabic

Dentin hypersensitivity
Beiruti, Nabil
Dentinal hypersensitivity is a significant clinical problem. It is defined as short sharp pain arising from exposed dentine typically in response to thermal, chemical, tactile or osmotic stimuli. The most common reason for exposed dentinal tubules is gingival recession. The Hydrodynamic theory is the most widely accepted theory to explain the causes of this condition. It postulates that fluids within the dentinal tubules are disturbed either by temperature, physical or osmotic changes and that these fluid changes or movements stimulate a baroreceptor which leads to neural discharge. Management of dentine hypersensitivity includes preventive (at home) and treatment (at dental clinic) procedures. Available first-line treatments for dentin hypersensitivity are generally designed to reduce fluid flow in dentin tubules or block the nerveresponse in the pulp. Most treatments interrupt neural activation and pain transmission with potassium nitrate or potassium chloride. Strontium chloride acts to reduce fluid flow by occluding the dentinal tubules themselves. Active treatment may begin with an athome method, this alone may alleviate the condition, but if not, an in-office treatment may be used.