TY - JOUR
T1 - An evaluation of the effect of methylene blue dye pH on apical leakage
AU - Starkey, Dennis L.
AU - Anderson, Ronald W.
AU - Pashley, David H.
N1 - Funding Information:
This project was supported, in part, by Grant DE 06427 from the National Institute of Dental Research and by the Medical College of Georgia Dental Research Center.
PY - 1993/9
Y1 - 1993/9
N2 - 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.
AB - 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.
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U2 - 10.1016/S0099-2399(06)80529-7
DO - 10.1016/S0099-2399(06)80529-7
M3 - Article
C2 - 8263449
AN - SCOPUS:0027654198
SN - 0099-2399
VL - 19
SP - 435
EP - 439
JO - Journal of endodontics
JF - Journal of endodontics
IS - 9
ER -