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Correlation between antioxidant activity and bonding strength on bleached enamel
Objective: This study used the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) method to evaluate the percentage of antioxidant activity (%AA) of green tea (GT) and sodium ascorbate (SA) gel in three concentrations (10%, 20% and 30%), and the influence of these concentrations on the microshear bond st...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Taylor & Francis
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433182/ https://www.ncbi.nlm.nih.gov/pubmed/28642919 http://dx.doi.org/10.1080/23337931.2016.1222283 |
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author | De Carvalho, Hellen Caroliny Guiraldo, Ricardo Danil Poli-Frederico, Regina Célia Maciel, Sandra Mara Moura, Sandra Kiss Lopes, Murilo Baena Berger, Sandrine Bittencourt |
author_facet | De Carvalho, Hellen Caroliny Guiraldo, Ricardo Danil Poli-Frederico, Regina Célia Maciel, Sandra Mara Moura, Sandra Kiss Lopes, Murilo Baena Berger, Sandrine Bittencourt |
author_sort | De Carvalho, Hellen Caroliny |
collection | PubMed |
description | Objective: This study used the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) method to evaluate the percentage of antioxidant activity (%AA) of green tea (GT) and sodium ascorbate (SA) gel in three concentrations (10%, 20% and 30%), and the influence of these concentrations on the microshear bond strength (μ-SBT) values of bleached enamel, using 10% carbamide peroxide (CP). Materials and methods: Eighty intact third molars were selected to perform the μ-SBT test, and were randomly divided into eight experimental groups: G1: positive control – no treatment; G2: negative control – bleached with CP; G3: PC +10% GT; G4: PC +20% GT; G5: PC +30% GT; G6: PC +10% SA; G7: PC +20% SA and G8: PC +30% SA. After applying the treatments, adhesive procedures were performed using Single Bond 2 and Filtek Z350XT. After 24 h, the samples were tested in a universal testing machine until fracture. The %AA was assessed in triplicate by DDPH method using a UV–VIS spectrophotometer. Results: In the μ-SBT, ANOVA revealed no significant difference between the antioxidants evaluated (p = .625), but did reveal significant effects of the concentrations studied (p = .007). A negative correlation was observed between μ-SBT and solution concentrations. The values of %AA were from 90.58 to 96.75. Conclusions: The reverse results occurred in μ-SBT values, only when the antioxidants were used in a 10% concentration and, %AA did not influence μ-SBT. |
format | Online Article Text |
id | pubmed-5433182 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Taylor & Francis |
record_format | MEDLINE/PubMed |
spelling | pubmed-54331822017-06-22 Correlation between antioxidant activity and bonding strength on bleached enamel De Carvalho, Hellen Caroliny Guiraldo, Ricardo Danil Poli-Frederico, Regina Célia Maciel, Sandra Mara Moura, Sandra Kiss Lopes, Murilo Baena Berger, Sandrine Bittencourt Acta Biomater Odontol Scand Original Article Objective: This study used the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) method to evaluate the percentage of antioxidant activity (%AA) of green tea (GT) and sodium ascorbate (SA) gel in three concentrations (10%, 20% and 30%), and the influence of these concentrations on the microshear bond strength (μ-SBT) values of bleached enamel, using 10% carbamide peroxide (CP). Materials and methods: Eighty intact third molars were selected to perform the μ-SBT test, and were randomly divided into eight experimental groups: G1: positive control – no treatment; G2: negative control – bleached with CP; G3: PC +10% GT; G4: PC +20% GT; G5: PC +30% GT; G6: PC +10% SA; G7: PC +20% SA and G8: PC +30% SA. After applying the treatments, adhesive procedures were performed using Single Bond 2 and Filtek Z350XT. After 24 h, the samples were tested in a universal testing machine until fracture. The %AA was assessed in triplicate by DDPH method using a UV–VIS spectrophotometer. Results: In the μ-SBT, ANOVA revealed no significant difference between the antioxidants evaluated (p = .625), but did reveal significant effects of the concentrations studied (p = .007). A negative correlation was observed between μ-SBT and solution concentrations. The values of %AA were from 90.58 to 96.75. Conclusions: The reverse results occurred in μ-SBT values, only when the antioxidants were used in a 10% concentration and, %AA did not influence μ-SBT. Taylor & Francis 2016-08-23 /pmc/articles/PMC5433182/ /pubmed/28642919 http://dx.doi.org/10.1080/23337931.2016.1222283 Text en © 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article De Carvalho, Hellen Caroliny Guiraldo, Ricardo Danil Poli-Frederico, Regina Célia Maciel, Sandra Mara Moura, Sandra Kiss Lopes, Murilo Baena Berger, Sandrine Bittencourt Correlation between antioxidant activity and bonding strength on bleached enamel |
title | Correlation between antioxidant activity and bonding strength on bleached enamel |
title_full | Correlation between antioxidant activity and bonding strength on bleached enamel |
title_fullStr | Correlation between antioxidant activity and bonding strength on bleached enamel |
title_full_unstemmed | Correlation between antioxidant activity and bonding strength on bleached enamel |
title_short | Correlation between antioxidant activity and bonding strength on bleached enamel |
title_sort | correlation between antioxidant activity and bonding strength on bleached enamel |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433182/ https://www.ncbi.nlm.nih.gov/pubmed/28642919 http://dx.doi.org/10.1080/23337931.2016.1222283 |
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