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EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS

Dentin adhesion procedure presents limitations, especially regarding to lifetime stability of formed hybrid layer. Alternative procedures have been studied in order to improve adhesion to dentin. Objective: The aim of this study was to evaluate in vitro the influence of deproteinization or dentin tu...

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Autores principales: Baseggio, Wagner, Consolmagno, Elaine Cristina, de Carvalho, Flávia Lunardelli Negreiros, Ueda, Julio Katuhide, Schmitt, Vera Lucia, Formighieri, Luis Alberto, Naufel, Fabiana Scarparo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Odontologia de Bauru da Universidade de São Paulo 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327675/
https://www.ncbi.nlm.nih.gov/pubmed/19936527
http://dx.doi.org/10.1590/S1678-77572009000500021
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author Baseggio, Wagner
Consolmagno, Elaine Cristina
de Carvalho, Flávia Lunardelli Negreiros
Ueda, Julio Katuhide
Schmitt, Vera Lucia
Formighieri, Luis Alberto
Naufel, Fabiana Scarparo
author_facet Baseggio, Wagner
Consolmagno, Elaine Cristina
de Carvalho, Flávia Lunardelli Negreiros
Ueda, Julio Katuhide
Schmitt, Vera Lucia
Formighieri, Luis Alberto
Naufel, Fabiana Scarparo
author_sort Baseggio, Wagner
collection PubMed
description Dentin adhesion procedure presents limitations, especially regarding to lifetime stability of formed hybrid layer. Alternative procedures have been studied in order to improve adhesion to dentin. Objective: The aim of this study was to evaluate in vitro the influence of deproteinization or dentin tubular occlusion, as well as the combination of both techniques, on microtensile bond strength μTBS) and marginal microleakage of composite resin restorations. Material and Methods: Extracted erupted human third molars were randomly divided into 4 groups. Dentin surfaces were treated with one of the following procedures: (A) 35% phosphoric acid gel (PA) + adhesive system (AS); (B) PA + 10% NaOCl + AS; (C) PA + oxalate + AS and (D) PA + oxalate + 10% NaOCl + AS. Bond strength data were analyzed statistically by two-way ANOVA and Tukey's test. The microleakage scores were analyzed using Kruskal-Wallis and Mann-Whitney non-parametric tests. Significance level was set at 0.05 for all analyses. Results: μTBS data presented statistically lower values for groups D and B, ranking data as A>C>B>D. The use of oxalic acid resulted in microleakage reduction along the tooth/restoration interface, being significant when used alone. On the other hand, the use of 10% NaOCl alone or in combination with oxalic acid, resulted in increased microleakage. Conclusions: Dentin deproteinization with 10% NaOCl or in combination with oxalate significantly compromised both the adhesive bond strength and the microleakage at interface. Tubular occlusion prior to adhesive system application seems to be a useful technique to reduce marginal microleakage.
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spelling pubmed-43276752015-03-11 EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS Baseggio, Wagner Consolmagno, Elaine Cristina de Carvalho, Flávia Lunardelli Negreiros Ueda, Julio Katuhide Schmitt, Vera Lucia Formighieri, Luis Alberto Naufel, Fabiana Scarparo J Appl Oral Sci Original Article Dentin adhesion procedure presents limitations, especially regarding to lifetime stability of formed hybrid layer. Alternative procedures have been studied in order to improve adhesion to dentin. Objective: The aim of this study was to evaluate in vitro the influence of deproteinization or dentin tubular occlusion, as well as the combination of both techniques, on microtensile bond strength μTBS) and marginal microleakage of composite resin restorations. Material and Methods: Extracted erupted human third molars were randomly divided into 4 groups. Dentin surfaces were treated with one of the following procedures: (A) 35% phosphoric acid gel (PA) + adhesive system (AS); (B) PA + 10% NaOCl + AS; (C) PA + oxalate + AS and (D) PA + oxalate + 10% NaOCl + AS. Bond strength data were analyzed statistically by two-way ANOVA and Tukey's test. The microleakage scores were analyzed using Kruskal-Wallis and Mann-Whitney non-parametric tests. Significance level was set at 0.05 for all analyses. Results: μTBS data presented statistically lower values for groups D and B, ranking data as A>C>B>D. The use of oxalic acid resulted in microleakage reduction along the tooth/restoration interface, being significant when used alone. On the other hand, the use of 10% NaOCl alone or in combination with oxalic acid, resulted in increased microleakage. Conclusions: Dentin deproteinization with 10% NaOCl or in combination with oxalate significantly compromised both the adhesive bond strength and the microleakage at interface. Tubular occlusion prior to adhesive system application seems to be a useful technique to reduce marginal microleakage. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2009-10 /pmc/articles/PMC4327675/ /pubmed/19936527 http://dx.doi.org/10.1590/S1678-77572009000500021 Text en http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Baseggio, Wagner
Consolmagno, Elaine Cristina
de Carvalho, Flávia Lunardelli Negreiros
Ueda, Julio Katuhide
Schmitt, Vera Lucia
Formighieri, Luis Alberto
Naufel, Fabiana Scarparo
EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title_full EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title_fullStr EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title_full_unstemmed EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title_short EFFECT OF DEPROTEINIZATION AND TUBULAR OCCLUSION ON MICROTENSILE BOND STRENGTH AND MARGINAL MICROLEAKAGE OF RESIN COMPOSITE RESTORATIONS
title_sort effect of deproteinization and tubular occlusion on microtensile bond strength and marginal microleakage of resin composite restorations
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327675/
https://www.ncbi.nlm.nih.gov/pubmed/19936527
http://dx.doi.org/10.1590/S1678-77572009000500021
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