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Evaluation of microleakage following application of a dentin bonding agent as root canal sealer in the presence or absence of smear layer.

Abstract
The aim of this study was to compare the apical leakage of roots obturated with gutta-percha using either an epoxy resin sealer (AH26) or a dual cure dentin binding agent (Excite DSC) as sealer in the presence or absence of smear layer with fluid filtration method. The canals of eighty-six, single-rooted premolars were instrumented until a #40 K-file fit at working length and then randomly divided into four groups (n = 20) with the remaining six used as controls. Groups 1 and 2 were filled with gutta-percha using AH26 as sealer; groups 3 and 4 were filled with gutta-percha and Excite DSC as sealer. Groups 1 and 3 were smear layer-positive, while group 2 and 4 were designated as smear layer-negative. After 3 days and 3 months, the samples were connected to a fluid filtration system. Analysis of data with the paired t-test showed that microleakage in AH26 groups (with and without smear layer) decreased significantly at 3 months compared to 3 days; however, in the DBA groups, the amount of microleakage at 3 days and 3 months was not significantly different. According to the results of this study, DBA (Excite DSC) had better apical sealing ability and could be applied clinically.
AuthorsSaeed Moradi, Neda Naghavi, Ehsan Rohani, Maryam Javidi
JournalJournal of oral science (J Oral Sci) Vol. 51 Issue 2 Pg. 207-13 (Jun 2009) ISSN: 1880-4926 [Electronic] Japan
PMID19550088 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Dentin-Bonding Agents
  • Drug Combinations
  • Epoxy Resins
  • Excite cement
  • Methacrylates
  • Root Canal Filling Materials
  • Silver
  • epoxy resin AH-26
  • Titanium
  • Bismuth
Topics
  • Bicuspid
  • Bismuth
  • Dental Leakage (prevention & control)
  • Dentin-Bonding Agents
  • Drug Combinations
  • Epoxy Resins
  • Filtration
  • Humans
  • Methacrylates
  • Root Canal Filling Materials
  • Root Canal Obturation (methods)
  • Silver
  • Smear Layer
  • Titanium

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