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Effect of smear layer on coronal microleakage.

Abstract
The purpose of this study was to examine the effect of smear layer on coronal microleakage. Fifty-two single-rooted extracted human teeth with a straight root canal were chemomechanically prepared and equally divided into experimental groups A and B. The teeth in group B were treated with ethylenediamine tetraacetic acid and sodium hypochlorite to remove the smear layer. All teeth in the experimental groups were next obturated with gutta-percha and sealer. Finally they were tested for dye leakage with methylene blue. Linear and volumetric measurement of dye penetration was used to assess leakage. The results of this study suggest that the removal of smear layer significantly improves the tightness of the sealing in the coronal area.
AuthorsL Vassiliadis, E Liolios, V Kouvas, N Economides
JournalOral surgery, oral medicine, oral pathology, oral radiology, and endodontics (Oral Surg Oral Med Oral Pathol Oral Radiol Endod) Vol. 82 Issue 3 Pg. 315-20 (Sep 1996) ISSN: 1079-2104 [Print] United States
PMID8884832 (Publication Type: Journal Article)
Chemical References
  • Coloring Agents
  • Edetic Acid
  • Sodium Hypochlorite
  • Methylene Blue
Topics
  • Coloring Agents
  • Dental Leakage (prevention & control)
  • Dental Pulp Cavity (ultrastructure)
  • Edetic Acid
  • Humans
  • Methylene Blue
  • Microscopy, Electron, Scanning
  • Root Canal Preparation (methods)
  • Smear Layer
  • Sodium Hypochlorite
  • Tooth Crown

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