Instant and Lasting Relief Effects of Strontium Chloride/Potassium Nitrate Dentifrice on Dentin Hypersensitivity

Dentine Hypersensitivity Clinical Trial

Official title: A Randomized, Double-blind Clinical Trial to Assess the Instant and Lasting Relief Effects of a Dentifrice Containing 2% Strontium Chloride and 5% Potassium Nitrate on Dentin Hypersensitivity

Status Completed

Clinical Trial Summary

The objective of the present study was to compare the effects of a commercially available dentifrice containing 2% strontium chloride and 5% potassium nitrate in a silica base, versus a control dentifrice, containing exactly the same ingredients apart from strontium chloride and potassium nitrate, on the instant and lasting relief of DH.

Clinical Trial Description

Dentin hypersensitivity (DH) is a very common complaint that occurs in the general population. The intensity of the pain can be minor to very serious, which may prevent one from eating or performing ordinary oral hygiene practices. The most accepted mechanism by which DH occurs is hydrodynamic theory, which suggests that pain-producing stimuli cause rapid movement of fluid within the dentin tubules, as a result the free nerve endings, at the inner ends of the tubules or the periphery of the pulp, are excited and DH occurs. According to this theory, one approach to treat DH is reducing dentin tubule fluid movement through occluding open tubules. Strontium chloride was the first tubule-blocking ingredient used in dentifrice about fifty years ago and since that time a paucity of clinical studies have been carried out to test its effectiveness on DH. The other approach is to reduce the pulp nerve excitability by depolarizing the nerve endings, in which the most widely used material is potassium salts. Although there is limited clinical evidence that dentifrices containing strontium chloride or potassium nitrate alone, as the major desensitizing agent, has an effect on reducing DH, no clinical studies have shown the effectiveness of a dentifrice containing both strontium chloride and potassium nitrate in a silica base on alleviating DH. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Dentin Sensitivity
• Dentine Hypersensitivity
• Hypersensitivity

• NCT number: NCT01426360
• Study type: Interventional
• Source: Sun Yat-sen University
• Status: Completed
• Phase: N/A
• Start date: September 2011
• Completion date: September 2011