An evaluation of the effect of methylene blue dye pH on apical leakage

Dennis L. Starkey, Ronald W. Anderson, David Henry Pashley

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The effect of varying the pH of 2% methylene blue dye on apical leakage was evaluated. Eighty-four roots of extracted human teeth were used in this study. The roots were endodontically cleaned and shaped, obturated, apically resected, and amalgam or Temporary Endodontic Restorative Material retrofillings were placed. The roots were immersed for 7 days in dye solutions of controlled pH of 1, 2, 3, 5, or 7, or in a 2% unbuffered deionized water solution of methylene blue. The results demonstrated significantly less leakage in the pH 1 and 2 amalgam groups. All other amalgam groups and the Temporary Endodontic Restorative Material groups showed no significant differences attributable to pH. Temporary Endodontic Restorative Material retrofilling groups demonstrated statistically significantly less apical leakage at each pH evaluated than the amalgam-retrofilled groups. Additionally, a significant buffering effect of the root structure on the dye solutions was measured.

Original languageEnglish (US)
Pages (from-to)435-439
Number of pages5
JournalJournal of Endodontics
Volume19
Issue number9
DOIs
StatePublished - Jan 1 1993

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Methylene Blue
Coloring Agents
Tooth
Water
T.E.R.M. composite resin

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

An evaluation of the effect of methylene blue dye pH on apical leakage. / Starkey, Dennis L.; Anderson, Ronald W.; Pashley, David Henry.

In: Journal of Endodontics, Vol. 19, No. 9, 01.01.1993, p. 435-439.

Research output: Contribution to journalArticle

Starkey, Dennis L. ; Anderson, Ronald W. ; Pashley, David Henry. / An evaluation of the effect of methylene blue dye pH on apical leakage. In: Journal of Endodontics. 1993 ; Vol. 19, No. 9. pp. 435-439.
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