Abstract
Introduction
The purpose of this study was to evaluate the effects of different solutions used
for final irrigation on sealer penetration into dentinal tubules.
Methods
Thirty-two recently extracted human mandibular premolar teeth were treated with sodium
hypochlorite (NaOCl) irrigation. The samples were divided into 4 groups according
to the final irrigation solution used: (1) the EDTA group: 17% EDTA + 2.5% NaOCl,
(2) the maleic acid (MA) group: 7% MA + 2.5% NaOCl, (3) the citric acid (CA) group:
10% CA + 2.5% NaOCl, and (4) the control group: 2.5% NaOCl. All teeth were obturated
using the cold lateral condensation technique with gutta-percha and AH 26 sealer (Dentsply;
DeTrey, Konstanz, Germany) labeled with fluorescent dye. The teeth were sectioned
at distances of 2, 5, and 8 mm from the root apex. Total percentage and maximum depth
of sealer penetration were measured using confocal laser scanning microscopy.
Results
The Kruskal-Wallis analysis results showed that there was a significant difference
in the percentage and maximum depth of sealer penetration among all groups in all
sections (P < .05).The coronal sections in each group showed a significantly higher percentage
and maximum depth of sealer penetration than did the apical and middle sections (P < .05).
Conclusions
Final irrigation with EDTA, MA, and CA after the use of NaOCl affected sealer penetration.
However, there was no significant difference between these experimental groups (EDTA,
MA, and CA) in all sections.
Key Words
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Article info
Publication history
Published online: April 27, 2012
Identification
Copyright
© 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
