Leakage and sealer penetration in smear-free dentin after a final rinse with 95% ethanol

J Endod. 2006 Aug;32(8):785-8. doi: 10.1016/j.joen.2006.02.027. Epub 2006 Jun 6.

Abstract

Forty extracted maxillary incisors were decoronated, prepared in a crown-down fashion and randomly divided into two groups of 16 roots each. Remaining roots served as controls. Smear layer was removed with 17% EDTA followed by 5.25% NaOCl, the canals in group N were again rinsed with NaOCl before obturation with laterally compacted gutta-percha and Roth's 801 sealer. The roots in group E were rinsed with 95% ethyl alcohol instead of NaOCl for the final rinse. Leakage was determined using a fluid-flow model. Roots were cleared, split, and sealer penetration into the dentinal tubules was measured under light-microscopy. Group E demonstrated significantly greater sealer penetration (p = 0.002) and significantly less leakage (p = 0.040), than group N. Leakage could not be significantly correlated with sealer penetration (p = 0.725). Under the conditions of this study, we found that a final rinse with 95% ethyl alcohol increased sealer penetration and decreased leakage.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Dental Leakage / prevention & control*
  • Dentin / drug effects*
  • Edetic Acid / pharmacology
  • Ethanol / pharmacology
  • Humans
  • Root Canal Filling Materials / chemistry*
  • Root Canal Irrigants / pharmacology*
  • Smear Layer
  • Sodium Hypochlorite / pharmacology
  • Zinc Oxide-Eugenol Cement / chemistry*

Substances

  • Root Canal Filling Materials
  • Root Canal Irrigants
  • Zinc Oxide-Eugenol Cement
  • Ethanol
  • Roth's 801 Sealer
  • Edetic Acid
  • Sodium Hypochlorite