Abstract
Introduction
The aim of this study was to investigate the effect of prior calcium hydroxide (Ca[OH]2) intracanal placement on the bond strength of AH Plus (Dentsply DeTrey GmbH, Konstanz,
Germany), iRoot SP (Innovative Bioceramix, Vancouver, BC, Canada), and MTA Fillapex
(Angelus Soluções Odontológicas, Londrina, PR, Brazil).
Methods
The root canals of 90 human incisor teeth were prepared with the ProTaper System (Dentsply
Maillefer, Ballaigues, Switzerland) up to a master apical file size of F5. Canals
were filled using the single-cone technique either immediately (the control group,
n = 30) or after a 7-day Ca(OH)2 placement. Ca(OH)2 removal was performed either manually using F5 with distilled water irrigation (the
Ca[OH]2 group, n = 30) or manually using Protaper F5 followed by passive ultrasonic irrigation
with 2.5 % NaOCl with a final flush of 17 % EDTA and then distilled water (the PUI
group, n = 30). After obturation, a 2-mm-thick middle section of each root was then
subjected to push-out testing.
Results
Using 1-way analysis of variance, AH Plus showed a higher bond strength than iRoot
SP and MTA Fillapex in the control group (P < .05). With prior Ca(OH)2 placement, AH Plus and iRoot SP showed a similar bond strength (P > .05), which was higher than MTA Fillapex (P < .05).
Conclusions
Prior Ca(OH)2 placement seemed to improve the dislodgment resistance of iRoot SP but did not affect
AH Plus and MTA Fillapex.
Key Words
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Article info
Publication history
Published online: March 26, 2012
Identification
Copyright
© 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
