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Type: Artigo de periódico
Title: High-concentrated carbamide peroxide bleaching agents effects on enamel surface
Author: Cavalli, V
Arrais, CAG
Giannini, M
Ambrosano, GMB
Abstract: Concern has been expressed regarding the adverse effects of peroxide-containing tooth bleaching agents on enamel surface. This study examined enamel average surface roughness before (baseline) and after an in-office bleaching protocol and investigated the influence of high concentrations of carbamide peroxide gels on its surface staining and morphology. Flat enamel surfaces were submitted to 35 and 37% carbamide peroxide or to no bleaching treatment (n = 10) and evaluated with a profilometer. Eight specimens from each group were randomly selected and immersed in a 2% methylene blue solution. Afterwards, specimens were ground into powder and prepared for the spectrophotometric analysis. Two remained specimens of each group were examined using a scanning electron microscope. Data were subjected to analysis of variance and Tukey test (P > 0.05). Baseline roughness average was statistically similar for all groups, however, 35% carbamide peroxide produced the roughest enamel surfaces. Different concentrations of carbamide peroxide produced similar staining means and enamel surface morphological alterations.
Subject: bleaching
carbamide peroxide
surface morphology
Country: Inglaterra
Editor: Blackwell Publishing Ltd
Citation: Journal Of Oral Rehabilitation. Blackwell Publishing Ltd, v. 31, n. 2, n. 155, n. 159, 2004.
Rights: fechado
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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