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Type: Artigo de periódico
Title: Efficacy Of Tooth Bleaching With The Prior Application Of A Desensitizing Agent.
Author: do Carmo Públio, Juliana
D'Arce, Maria B F
Ambrosano, Gláucia M B
Aguiar, Flávio H B
Lovadino, José R
Paulillo, Luís A M S
Lima, Débora A N L
Abstract: In the present study, we evaluated the efficacy of bleaching on enamel and opposite dentin surfaces using 35% hydrogen peroxide (HP) with the prior application of a desensitizing agent. Thirty bovine dental fragments, with thicknesses of 1 mm enamel and 1.75 mm dentin, were stained in a solution of black tea. The fragments were randomly divided into three groups (n = 10) according to the following protocols: (a) 2% neutral fluoride + bleaching; (b) desensitizing agent + bleaching; and (c) without desensitizer + bleaching. The bleaching efficacy was evaluated four times: after staining with tea (baseline) and after each of the 3 weeks of bleaching, by means of the CIE Lab method using a reflectance spectrophotometer. The data coordinate L* was evaluated by an analysis of repeated measures with PROC MIXED and Tukey-Kramer's test. The ΔE values were subjected to anova and Tukey's test (α = 0.05). The 35% HP treatment showed greater efficacy on deep dentin after removal of the enamel stains, with increasing means during all times in all treatments. The use of a desensitizing agent prior to the bleaching session did not affect the mechanism of action of 35% HP with regard to tooth depth.
Subject: Dentin Sensitivity
Hydrogen Peroxide
Tooth Bleaching
Tooth Discoloration
Rights: fechado
Identifier DOI: 10.1111/jicd.12074
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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