Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system
Chemical substances used during biomechanical preparation of root canals can alter the composition of dentin surface and affect the interaction with restorative materials. OBJECTIVE: The purpose of this study was to evaluate the microtensile bond strength (µTBS) of a self-etching adhesive system to...
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University of São Paulo
2010-08-01
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doaj-fc3ead94a206443ea5ed7dcd6f8a16562020-11-24T22:06:34ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652010-08-0118438538910.1590/S1678-77572010000400011Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive systemDoglas CecchinAna Paula FarinaDaniel GalafassiJoão Vicente Baroni BarbizamSilmara Aparecida Milori CoronaBruno Carlini-JúniorChemical substances used during biomechanical preparation of root canals can alter the composition of dentin surface and affect the interaction with restorative materials. OBJECTIVE: The purpose of this study was to evaluate the microtensile bond strength (µTBS) of a self-etching adhesive system to dentin irrigated with sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic acid (EDTA). MATERIAL AND METHODS: Thirty human third molars were sectioned 3 mm below the occlusal surface, polished with 600- to 1200-grit silicon carbide papers, and randomly divided into 3 groups: G1 (control): no irrigating solution; G2: 1% NaOCl; and G3: 1% NaOCl followed by the application of 17% EDTA. The specimens received the self-etching adhesive system (XENO III - Dentsply), restored with microhybrid composite resin (Z250 - 3M ESPE), sectioned and trimmed to create 4 hourglass-shaped slabs of each tooth. The slabs were tested in microtensile strength in a universal testing machine (Emic DL 2000) at a crosshead speed of 0.5 mm/min until fracture. The results were analyzed statistically by ANOVA and Newman-Keuls test. RESULTS: Mean µTBS values and standard deviations in MPa were: G1 = 11.89 ± 4.22; G2 = 19.41 ± 5.32; G3 = 11.34 ± 4.73. 1% NaOCl increased the adhesive resistance significantly (p<0.001/F=22.5763). The application of 1% NaOCl/17% EDTA resulted in statistically similar µTBS to the control group. CONCLUSIONS: None of the irrigants affected negatively the µTBS of XENO III to dentin. The use of 1% NaOCl alone resulted in higher bond strength than the other treatments. The combination of 1% NaOCl and 17% EDTA produced similar bond strength to that of untreated dentin.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000400011Dentin-bonding agentsEDTASodium hypochlorite |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Doglas Cecchin Ana Paula Farina Daniel Galafassi João Vicente Baroni Barbizam Silmara Aparecida Milori Corona Bruno Carlini-Júnior |
spellingShingle |
Doglas Cecchin Ana Paula Farina Daniel Galafassi João Vicente Baroni Barbizam Silmara Aparecida Milori Corona Bruno Carlini-Júnior Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system Journal of Applied Oral Science Dentin-bonding agents EDTA Sodium hypochlorite |
author_facet |
Doglas Cecchin Ana Paula Farina Daniel Galafassi João Vicente Baroni Barbizam Silmara Aparecida Milori Corona Bruno Carlini-Júnior |
author_sort |
Doglas Cecchin |
title |
Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
title_short |
Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
title_full |
Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
title_fullStr |
Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
title_full_unstemmed |
Influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
title_sort |
influence of sodium hypochlorite and edta on the microtensile bond strength of a self-etching adhesive system |
publisher |
University of São Paulo |
series |
Journal of Applied Oral Science |
issn |
1678-7757 1678-7765 |
publishDate |
2010-08-01 |
description |
Chemical substances used during biomechanical preparation of root canals can alter the composition of dentin surface and affect the interaction with restorative materials. OBJECTIVE: The purpose of this study was to evaluate the microtensile bond strength (µTBS) of a self-etching adhesive system to dentin irrigated with sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic acid (EDTA). MATERIAL AND METHODS: Thirty human third molars were sectioned 3 mm below the occlusal surface, polished with 600- to 1200-grit silicon carbide papers, and randomly divided into 3 groups: G1 (control): no irrigating solution; G2: 1% NaOCl; and G3: 1% NaOCl followed by the application of 17% EDTA. The specimens received the self-etching adhesive system (XENO III - Dentsply), restored with microhybrid composite resin (Z250 - 3M ESPE), sectioned and trimmed to create 4 hourglass-shaped slabs of each tooth. The slabs were tested in microtensile strength in a universal testing machine (Emic DL 2000) at a crosshead speed of 0.5 mm/min until fracture. The results were analyzed statistically by ANOVA and Newman-Keuls test. RESULTS: Mean µTBS values and standard deviations in MPa were: G1 = 11.89 ± 4.22; G2 = 19.41 ± 5.32; G3 = 11.34 ± 4.73. 1% NaOCl increased the adhesive resistance significantly (p<0.001/F=22.5763). The application of 1% NaOCl/17% EDTA resulted in statistically similar µTBS to the control group. CONCLUSIONS: None of the irrigants affected negatively the µTBS of XENO III to dentin. The use of 1% NaOCl alone resulted in higher bond strength than the other treatments. The combination of 1% NaOCl and 17% EDTA produced similar bond strength to that of untreated dentin. |
topic |
Dentin-bonding agents EDTA Sodium hypochlorite |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000400011 |
work_keys_str_mv |
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