Effect of an experimental desensitizing agent on reduction of bleaching-induced tooth sensitivity: A triple-blind randomized clinical trial.

Abstract

BACKGROUND:

In this randomized study, split-mouth, triple-blind clinical trial, the authors evaluated the efficacy of a desensitizing gel that contained 5% potassium nitrate and 5% glutaraldehyde applied before in-office bleaching with 35% hydrogen peroxide (HP).

METHODS:

Treatment with the desensitizing or placebo control gels was randomly assigned to one-half of the maxillary teeth of 42 patients in a split-mouth design. The desensitizing gels were applied and maintained in contact with the tooth enamel for 10 minutes, followed by 2 HP bleaching sessions separated by 1 week. The primary outcome variable was pain intensity assessed with a numeric rating scale and a visual analog scale. Color was evaluated by means of a digital spectrophotometer and a value-oriented shade guide.

RESULTS:

The difference in risk of developing tooth sensitivity between the desensitizing gel group (31.7%, 95% confidence interval [CI], 19.6 to 46.9) and the control group (70.7%; 95% CI, 55.5 to 82.3%) was statistically significant (P < .0001), as well as the difference in pain intensity in the first 24 hours (P < .001). No statistically significant difference was found in color change between teeth that received the desensitizing gel and those that received the placebo gel.

CONCLUSIONS:

Application of desensitizing gel that contained 5% potassium nitrate and 5% glutaraldehyde before HP whitening reduced the risk and severity of dental sensitivity, without altering the effectiveness of whitening.

PRACTICAL IMPLICATIONS:

A single application of desensitizing gel that contained 5% potassium nitrate and 5% glutaraldehyde can reduce tooth sensitivity after dental bleaching systems.

• Authors: Sibelli Olivieri Parreiras, Anna Luiza Szesz, Fabiana Madalozzo Coppla, Eveline Claudia Martini, Paulo Vitor Farago, Alessandro D Loguercio, Alessandra Reis
• Journal: Journal of the American Dental Association (1939) (J Am Dent Assoc) Vol. 149 Issue 4 Pg. 281-290 (Apr 2018) ISSN: 1943-4723 [Electronic] England
• PMID: 29439773 (Publication Type: Journal Article, Randomized Controlled Trial)
• Copyright: Copyright © 2018 American Dental Association. Published by Elsevier Inc. All rights reserved.

Chemical References

• Tooth Bleaching Agents
• Hydrogen Peroxide

Topics

• Dentin Sensitivity
• Humans
• Hydrogen Peroxide
• Tooth
• Tooth Bleaching
• Tooth Bleaching Agents