Abstract
Introduction
The purpose of this study was to evaluate the push-out bond strengths of different
obturating materials.
Methods
Forty single-rooted human extracted teeth were used in this study. The teeth were
instrumented and irrigated by using 5.25% NaOCl, 15% ethylenediaminetetraacetic acid,
and sterile water. The teeth were then filled with Resilon/RealSeal, Resilon/RealSeal
SE, Resilon/MetaSeal , or gutta-percha/Kerr EWT sealer. The roots were then sectioned
into 1-mm-thick slices and subjected to vertical loading to displace the obturating
material toward the coronal side of the slice. The bond strength was then calculated
and subjected to statistical analysis. Slices were examined by using a stereomicroscope
at 30× to determine the mode of failure.
Results
The mean push-out bond strengths were as follows: Resilon/RealSeal, 1.45 ± 0.99 MPa;
RealSeal SE, 0.88 ± 0.49 MPa; Resilon/MetaSeal, 2.41 ± 1.7 MPa; and gutta-percha/Kerr
EWT sealer, 2.32 ± 0.74 MPa.
Conclusions
The push-out bond strengths of Resilon/MetaSeal and gutta-percha/Kerr EWT were significantly
(P < .05) higher than either Resilon/RealSeal or Resilon/RealSeal SE. Resilon/MetaSeal
and gutta-percha/Kerr EWT did not differ significantly.
Key Words
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Article info
Publication history
Published online: December 14, 2009
Footnotes
Dr Stiegemeier is currently in practice in Beachwood, OH.
Identification
Copyright
© 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
