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ISRN Dentistry
Volume 2012 (2012), Article ID 359873, 5 pages
Research Article

Comparison of Endodontic Biomaterials as Apical Barriers in Simulated Open Apices

1Dental Carries Research Center, School of Dentistry, Qazvin University of Medical Sciences, Qazvin 34157-59811, Iran
2Dental Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran
3Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashad 91375-3316, Iran
4Iranian Center for Endodontic Research, Dental Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran

Received 7 March 2012; Accepted 2 May 2012

Academic Editors: J. H. Jeng and A. Vissink

Copyright © 2012 Mamak Adel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. To evaluate the effect of apical foramen diameter and apical barrier thickness on the sealing ability of mineral trioxide aggregate (MTA) and calcium enriched mixture (CEM) plugs in open apices. Materials and Methods. The fluid filtration method was conducted on a total of 136 roots. Samples were randomly divided into two control ( 𝑛 = 8 ) and four experimental groups ( 𝑛 = 3 0 ). Apical foramen diameters measuring 1.1 and 1.7 mm were shaped for groups “1 and 3” and “2 and 4”, respectively. In groups 1 and 2 MTA plug and in groups 3 and 4 CEM plug was inserted. The groups were further divided into subgroups according to the thickness of the apical plugs (3- or 5-mm). Microleakage was measured at 1, 7, and 30 days. Results. Mixed ANOVA test showed that the microleakage in groups 1 and 3 as well as all 5-mm plug subgroups were significantly less than groups 2 and 4 ( 𝑃 < 0 . 0 5 ) and 3-mm subgroups ( 𝑃 < 0 . 0 5 ), respectively. Microleakage was significantly lower at 30th day ( 𝑃 < 0 . 0 5 ). Conclusions. Reducing canal diameter or increasing apical plug thickness and the time interval increases the sealing ability of apical barriers. Furthermore, in comparison to MTA, CEM plugs demonstrated superior sealing ability.