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Effect of final irrigation protocols on push‐out bond strength of an epoxy resin root canal sealer to dentin
Author(s) -
Leal Fernanda,
Simão Renata Antoun,
Fidel Sandra Rivera,
Fidel Rivail Antônio Sérgio,
Prado Maíra
Publication year - 2015
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/aej.12114
Subject(s) - bond strength , smear layer , dentin , root canal , distilled water , ethylenediaminetetraacetic acid , dentistry , materials science , epoxy , irrigation , sodium hypochlorite , chemistry , composite material , layer (electronics) , adhesive , chromatography , medicine , metallurgy , chelation , ecology , biology , organic chemistry
Abstract The purpose of the present study was to evaluate the effect of different final irrigation protocols on push‐out bond strength of an epoxy resin root canal sealer to dentin. Eighty single‐rooted anterior teeth were used. The root canals were partially prepared using a rotary system and the final diameter was standardised using a #5 G ates‐ G lidden drill prior to the push‐out bond test. During chemomechanical preparation, 5.25% NaOCl or 2% CHX gel was used. For smear layer removal, 17% ethylenediaminetetraacetic acid (EDTA) or QM ix 2 in 1 was applied for 3 min. As final irrigant, 1 mL of NaOCl , CHX solution or distilled water was used. On conclusion of preparation, canals were filled with gutta‐percha/ AH Plus sealer. Bond strength was measured by the push‐out test. Data were statistically analysed by K ruskal– W allis and M ann– W hitney U ‐tests. The group NaOCl / EDTA / NaOCl showed significantly higher bond strength values than other groups. In all groups, there were mainly mixed failure patterns. It can be concluded that 5.25% NaOCl proved to be the best solution for the final irrigation when combined with EDTA . The final irrigation protocols affect the push‐out bond strength of AH P lus to dentin.