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dc.contributor.authorMilani, AS
dc.contributor.authorJafarabadi, MA
dc.contributor.authorPakdel, MV
dc.date.accessioned2018-08-26T09:44:27Z
dc.date.available2018-08-26T09:44:27Z
dc.date.issued2014
dc.identifier.urihttp://dspace.tbzmed.ac.ir:8080/xmlui/handle/123456789/58670
dc.description.abstractMineral trioxide aggregate (MTA) has been used successfully for the treatment of necrotic immature teeth as part of a 2-step apical barrier. Recently, some researchers have used MTA powder instead of wet-mix MTA. It has also been used in a single-step approach in order to decrease the number of patient appointments. The aim of this study was to evaluate the bacterial microleakage of MTA powder in comparison with wet-mix MTA, in single or 2-step barrier approaches. This ex vivo study was carried out on 70 extracted single-rooted teeth. The canals were enlarged to simulate immature teeth. The prepared specimens were assigned to 4 experimental (n = 15) and 2 control (n = 5) groups. In Group 1, a wet paper point was placed in the canal following placement of wet-mix MTA. In Group 2, a dry paper point was placed on wet-mix MTA. In Group 3, the samples were treated similarly to Group 1, but MTA powder was used instead of wet-mix MTA. In Group 4, the same procedures were followed as Group 3 except that a dry paper point was used. Microleakage of the samples was compared using a 2-chamber bacterial leakage apparatus. Results showed that there were no significant differences in the number of leaked samples or rate of leakage over time (P > 0.05) among the experimental groups. It can be concluded that MTA used in a single step approach has the same resistance against bacterial penetration as in a 2-step approach, and MTA powder provides the same sealing ability as wet-mix MTA. © Copyright 2014 by the Academy of General Dentistry. All rights reserved.
dc.language.isoEnglish
dc.relation.ispartofGeneral Dentistry
dc.subjectaluminum derivative
dc.subjectcalcium derivative
dc.subjectdrug combination
dc.subjectmineral trioxide aggregate
dc.subjectoxide
dc.subjectpowder
dc.subjectsilicate
dc.subjectbacterial phenomena and functions
dc.subjectcase control study
dc.subjectdrug combination
dc.subjecthuman
dc.subjectpowder
dc.subjecttooth apex
dc.subjectAluminum Compounds
dc.subjectBacterial Physiological Phenomena
dc.subjectCalcium Compounds
dc.subjectCase-Control Studies
dc.subjectDrug Combinations
dc.subjectHumans
dc.subjectOxides
dc.subjectPowders
dc.subjectSilicates
dc.subjectTooth Apex
dc.titleUsing mineral trioxide aggregate powder as an apical barrier: A bacterial leakage study
dc.typeArticle in Press
dc.citation.volume62
dc.citation.issue5
dc.citation.spage55
dc.citation.epage59
dc.citation.indexScopus


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