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Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis

This study evaluated the influence of different enamel thicknesses and bleaching agents on treatment efficacy in-depth by spectrophotometry color analysis. Eighty bovine dental fragments were previously stained in black tea solution and randomly assigned into eight groups (n=10), 1.75mm dentin thick...

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Autores principales: Públio, Juliana do Carmo, D’Arce, Maria Beatriz Freitas, Catelan, Anderson, Ambrosano, Gláucia Maria Bovi, Aguiar, Flávio Henrique Baggio, Lovadino, José Roberto, Lima, Débora Alves Nunes Leite
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Bentham Open 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5040760/
https://www.ncbi.nlm.nih.gov/pubmed/27708725
http://dx.doi.org/10.2174/1874210601610010438
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author Públio, Juliana do Carmo
D’Arce, Maria Beatriz Freitas
Catelan, Anderson
Ambrosano, Gláucia Maria Bovi
Aguiar, Flávio Henrique Baggio
Lovadino, José Roberto
Lima, Débora Alves Nunes Leite
author_facet Públio, Juliana do Carmo
D’Arce, Maria Beatriz Freitas
Catelan, Anderson
Ambrosano, Gláucia Maria Bovi
Aguiar, Flávio Henrique Baggio
Lovadino, José Roberto
Lima, Débora Alves Nunes Leite
author_sort Públio, Juliana do Carmo
collection PubMed
description This study evaluated the influence of different enamel thicknesses and bleaching agents on treatment efficacy in-depth by spectrophotometry color analysis. Eighty bovine dental fragments were previously stained in black tea solution and randomly assigned into eight groups (n=10), 1.75mm dentin thickness and different enamel thicknesses as follows: 0.5mm, 1.0mm planned, 1.0mm unplanned (aprismatic enamel), and absence of enamel. The 10% carbamide peroxide (CP) and 35% hydrogen peroxide (HP) bleaching gels were applied on the enamel surface following the manufacturer's recommendations. Color of underlying dentin was evaluated at four times: after staining with tea (baseline) and after each one of the three weeks of bleaching treatment, by CIE L*a*b* system using reflectance spectrophotometer (CM 700d, Konica Minolta). The ΔE, ΔL, Δa, and Δb values were recorded and subjected to repeated measures ANOVA and Tukey’s test (α=0.05). The results showed an increase on lightness (L*), with decreased redness (a*) and yellowness (b*). At first and second week, bleaching with CP showed higher whitening effectiveness compared to bleaching with HP and the presence of aprismatic enamel significantly reduced ΔE for bleaching with CP. After three weeks of bleaching, few differences were observed between CP and HP groups, and outer enamel layer caused no influence on bleaching effectiveness. Overall, both at-home and in-office bleaching treatments were effective and the presence of aprismatic enamel did not interfere on the whitening efficacy.
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spelling pubmed-50407602016-10-05 Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis Públio, Juliana do Carmo D’Arce, Maria Beatriz Freitas Catelan, Anderson Ambrosano, Gláucia Maria Bovi Aguiar, Flávio Henrique Baggio Lovadino, José Roberto Lima, Débora Alves Nunes Leite Open Dent J Article This study evaluated the influence of different enamel thicknesses and bleaching agents on treatment efficacy in-depth by spectrophotometry color analysis. Eighty bovine dental fragments were previously stained in black tea solution and randomly assigned into eight groups (n=10), 1.75mm dentin thickness and different enamel thicknesses as follows: 0.5mm, 1.0mm planned, 1.0mm unplanned (aprismatic enamel), and absence of enamel. The 10% carbamide peroxide (CP) and 35% hydrogen peroxide (HP) bleaching gels were applied on the enamel surface following the manufacturer's recommendations. Color of underlying dentin was evaluated at four times: after staining with tea (baseline) and after each one of the three weeks of bleaching treatment, by CIE L*a*b* system using reflectance spectrophotometer (CM 700d, Konica Minolta). The ΔE, ΔL, Δa, and Δb values were recorded and subjected to repeated measures ANOVA and Tukey’s test (α=0.05). The results showed an increase on lightness (L*), with decreased redness (a*) and yellowness (b*). At first and second week, bleaching with CP showed higher whitening effectiveness compared to bleaching with HP and the presence of aprismatic enamel significantly reduced ΔE for bleaching with CP. After three weeks of bleaching, few differences were observed between CP and HP groups, and outer enamel layer caused no influence on bleaching effectiveness. Overall, both at-home and in-office bleaching treatments were effective and the presence of aprismatic enamel did not interfere on the whitening efficacy. Bentham Open 2016-08-31 /pmc/articles/PMC5040760/ /pubmed/27708725 http://dx.doi.org/10.2174/1874210601610010438 Text en © Públio et al.; Licensee Bentham Open https://creativecommons.org/licenses/by/4.0/legalcode This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
spellingShingle Article
Públio, Juliana do Carmo
D’Arce, Maria Beatriz Freitas
Catelan, Anderson
Ambrosano, Gláucia Maria Bovi
Aguiar, Flávio Henrique Baggio
Lovadino, José Roberto
Lima, Débora Alves Nunes Leite
Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title_full Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title_fullStr Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title_full_unstemmed Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title_short Influence of Enamel Thickness on Bleaching Efficacy: An In-Depth Color Analysis
title_sort influence of enamel thickness on bleaching efficacy: an in-depth color analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5040760/
https://www.ncbi.nlm.nih.gov/pubmed/27708725
http://dx.doi.org/10.2174/1874210601610010438
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