[The treatment of dentin hypersensitivity].

Dentine hypersensitivity is caused by a change in fluid flow in the dentinal tubules, which excites nerve endings located in the dentinal tubules and at the pulp-dentine border area. Traumatic oral hygiene procedures, excessive use of acid containing dietary fluids and certain dental treatments have been implicated in the occurrence of dentine hypersensitivity. Initial treatment relies on a positive doctor-patient relationship and the use of a desensitizing toothpaste containing strontium chloride, potassium nitrate or sodium citrate. If no relief is obtained, further treatment attempts need to be undertaken by the dentist--application of fluoride varnishes, potassium oxalate, resins or adhesives.