Effective Tooth-bleaching Protocols Capable Of Reducing H(2)o(2) Diffusion Through Enamel And Dentine.

dc.creatorSoares, Diana G
dc.creatorBasso, Fernanda G
dc.creatorPontes, Elaine C V
dc.creatorGarcia, Lucas da F R
dc.creatorHebling, Josimeri
dc.creatorde Souza Costa, Carlos A
dc.date2014-Mar
dc.date2015-11-27T13:42:21Z
dc.date2015-11-27T13:42:21Z
dc.date.accessioned2018-03-29T01:20:27Z
dc.date.available2018-03-29T01:20:27Z
dc.identifierJournal Of Dentistry. v. 42, n. 3, p. 351-8, 2014-Mar.
dc.identifier1879-176X
dc.identifier10.1016/j.jdent.2013.09.001
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/24056046
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/201320
dc.identifier24056046
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1301553
dc.descriptionTo evaluate the effects of experimental protocols on bleaching effectiveness and hydrogen peroxide (HP) diffusion through enamel and dentine. Enamel/dentine discs were subjected to six bleaching sessions, consisting of 1 or 3 applications of 17.5% or 35%-HP gel for 5/15min, or 37% carbamide peroxide (CP) gel for 10/20min. Discs undergoing the regular protocol (35%-HP; 3×15min) constituted the positive control group. Colour change (ΔE) was assessed (CIE L*a*b* system) after each session. HP diffusion was quantified (sessions 1, 3, and 6) in enamel/dentine discs adapted to artificial pulp chambers. Data were analysed by Pillai's Trace and Bonferroni test, or by one-way ANOVA and SNK/Tamhane's test (α=5%). All tooth-bleaching protocols significantly increased the ΔE values. A reduction in HP diffusion and no significant difference in ΔE compared with the positive control were observed for the following bleaching protocols: 17.5%-HP 3×15min, at the 4th session; and 35%-HP 1×15 and 3×5min, at the 5th session. HP diffusion in the 37%-CP 3×20min bleaching protocol was statistically similar to that in the positive control. The other experimental bleaching protocols significantly decreased HP diffusion through enamel/dentine discs, but the ΔE values were statistically lower than those observed in the positive control, in all sessions. Shortening the contact time of a 35%-HP gel or reducing its concentration produces gradual tooth colour change and reduced HP diffusion through enamel and dentine. A reduction in HP concentration, from 35% to 17.5%, in a bleaching gel or shortening its application time on enamel provides a significant tooth-bleaching improvement associated with decreased HP diffusion across hard dental tissues. Therefore, these protocols may be an interesting alternative to be tested in the clinical situation.
dc.description42
dc.description351-8
dc.languageeng
dc.relationJournal Of Dentistry
dc.relationJ Dent
dc.rightsfechado
dc.rightsCopyright © 2013 Elsevier Ltd. All rights reserved.
dc.sourcePubMed
dc.subjectDentine
dc.subjectEnamel
dc.subjectHydrogen Peroxide
dc.subjectTooth Bleaching
dc.titleEffective Tooth-bleaching Protocols Capable Of Reducing H(2)o(2) Diffusion Through Enamel And Dentine.
dc.typeArtículos de revistas


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