Bond strength of different endodontic sealers to dentin: push-out test

João Vicente Baroni Barbizam; Martin Trope; Mario Tanomaru-Filho; Erica Cappelletto Nogueira Teixeira; Fabricio Batista Teixeira

doi:10.1590/S1678-77572011000600017

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Bond strength of different endodontic sealers to dentin: push-out test

Journal article

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Peer reviewed

Bond strength of different endodontic sealers to dentin: push-out test

João Vicente Baroni Barbizam, Martin Trope, Mario Tanomaru-Filho, Erica Cappelletto Nogueira Teixeira and Fabricio Batista Teixeira

Journal of applied oral science, Vol.19(6), pp.644-647

12/01/2011

DOI: 10.1590/S1678-77572011000600017

PMCID: PMC3973468

PMID: 22231001

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Abstract

OBJECTIVE: The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin. MATERIAL AND METHODS: Forty extracted single-rooted human teeth were examined and the coronal and middle thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post System, Pentron). The teeth were allocated in two experimental groups, irrigated with 2.5% NaOCl+17% EDTA or saline solution (control group) and instrumented using Race rotary files (FKG) to a size #40 at the working length. Then, the groups were divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ (Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of storage in 100% humidity at 37ºC, all teeth were sectioned transversally into 2-mm-thick discs. Push-out tests were performed at a cross-head speed of 1 mm/min using a universal testing machine. The maximum load at failure was recorded and expressed in MPa. RESULTS: Means (±SD) in root canals irrigated with 2.5% NaOCl and 17% EDTA were: G1 (21.6±6.0), G2 (15.2±3.7), G3 (14.6±4.5) and G4 (11.7±4.1).Two-way ANOVA and Tukey's test showed the highest bond strength for the Epiphany's group (p< 0.01) when compared to the other tested sealers. Saline solution decreased the values of bond-strength (p<0.05) for all sealers. CONCLUSION: Epiphany sealer presented higher bond strength values to dentin in both irrigating protocols, and the use of 2.5% NaOCl and 17% EDTA increased the bond strength values for all sealers.

DENTISTRY, ORAL SURGERY & MEDICINE

Details

Title: Subtitle: Bond strength of different endodontic sealers to dentin: push-out test
Creators: João Vicente Baroni Barbizam - Universidade de Passo Fundo
Martin Trope - North Carolina State University
Mario Tanomaru-Filho - Universidade Estadual Paulista
Erica Cappelletto Nogueira Teixeira - North Carolina State University
Fabricio Batista Teixeira - North Carolina State University
Resource Type: Journal article
Publication Details: Journal of applied oral science, Vol.19(6), pp.644-647
DOI: 10.1590/S1678-77572011000600017
PMID: 22231001
PMCID: PMC3973468
NLM abbreviation: J Appl Oral Sci
ISSN: 1678-7765
eISSN: 1678-7765
Publisher: Faculdade De Odontologia De Bauru - USP
Language: Portuguese
Date published: 12/01/2011
Academic Unit: Endodontics; Operative Dentistry
Record Identifier: 9984065990502771

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