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HOME > Restor Dent Endod > Volume 34(5); 2009 > Article
Original Article EVALUATION OF ENTEROCOCCUS FAECALIS REMOVAL EFFICACY OF THE ENDOVAC® AND ENDOACTIVATOR® INTRACANAL IRRIGATION METHODS
Seung-Gon Song, Kyung-Mo Cho, Jin-Woo Kim,*
J Korean Acad Conserv Dent 2009;34(5):-396.
DOI: https://doi.org/10.5395/JKACD.2009.34.5.390
Published online: January 14, 2009

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*Corresponding Author: Jin-Woo Kim, Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University, 123 Chibyon-dong, Gangneung, Gangwon-do, Korea, Tel: 82-33-640-2470 Fax: 82-33-642-6410, E-mail: mendo7@kangnung.ac.kr
• Received: June 17, 2009   • Revised: July 20, 2009   • Accepted: September 4, 2009

Copyright © 2009 The Korean Academy of Conservative Dentistry

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • The aim of this study was to evaluate endodontic irrigation methods with EndoVac® and EndoActivator® in the elimination of Enterococcus faecalis from the root canals. Extracted 70 human single-rooted teeth were used. The canals were instrumented by a crown-down technique with .04 taper ProFile to ISO size 40. After the teeth were autoclaved, the canals were inoculated with E. faecalis and incubated for 48 h. The teeth were randomly divided into three experimental groups of 20 teeth each according to canal irrigation methods and two control groups as follows: group 1 - EndoVac®; group 2 - EndoActivator®; group 3 - Conventional needle irrigation method. After canal irrigation using 2.5% NaOCl, first samples (S1) were taken using sterile paper point. And the canals were filled with sterile brain heart infusion (BHI) broth and incubated for 24 h, then second samples (S2) were taken. The samples were cultured on BHI agar plate to determine the numbers of colony forming units (CFU). In first sampling (S1), only one canal of conventional method among the all experimental groups was positive cultured. In second sampling (S2), EndoVac® group showed the least positive culture numbers of E. faecalis. There was statistically significant difference between the EndoVac® and conventional needle irrigation methods in the mean value of Log CFU. According to the results of this study, EndoVac® showed better efficacy than conventional needle irrigation method in the elimination of E. faecalis from the root canal.
Table 1.
Numbers of Positive cultures
Irrigation method N Positive Culture
(S1) (S2)
EndoVac 20 0 (0%) 3 (15%)
EndoActivator 20 0 (0%) 8 (40%)
Conventional 20 1 (5%) 13 (65%)

Positive control group (n=5)

Negative control group (n=5)

Table 2.
Mean values of the quantity of bacterial cells in secondary sampling (S2)
Irrigation method Colony Forming Units /ml (S2)
  Mean (CFU/ml) Mean of LOG
EndoVac 0.99×105 0.87 *
EndoActivator 2.06×105 1.81
Conventional 4.12×105 2.90

*There was significant(p < .05) difference between EndoVac and conventional irrigation method groups

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        EVALUATION OF ENTEROCOCCUS FAECALIS REMOVAL EFFICACY OF THE ENDOVAC® AND ENDOACTIVATOR® INTRACANAL IRRIGATION METHODS
        J Korean Acad Conserv Dent. 2009;34(5):390-396.   Published online January 14, 2009
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      EVALUATION OF ENTEROCOCCUS FAECALIS REMOVAL EFFICACY OF THE ENDOVAC® AND ENDOACTIVATOR® INTRACANAL IRRIGATION METHODS
      EVALUATION OF ENTEROCOCCUS FAECALIS REMOVAL EFFICACY OF THE ENDOVAC® AND ENDOACTIVATOR® INTRACANAL IRRIGATION METHODS
      Irrigation method N Positive Culture
      (S1) (S2)
      EndoVac 20 0 (0%) 3 (15%)
      EndoActivator 20 0 (0%) 8 (40%)
      Conventional 20 1 (5%) 13 (65%)
      Irrigation method Colony Forming Units /ml (S2)
        Mean (CFU/ml) Mean of LOG
      EndoVac 0.99×105 0.87 *
      EndoActivator 2.06×105 1.81
      Conventional 4.12×105 2.90
      Table 1. Numbers of Positive cultures

      Positive control group (n=5)

      Negative control group (n=5)

      Table 2. Mean values of the quantity of bacterial cells in secondary sampling (S2)

      There was significant(p < .05) difference between EndoVac and conventional irrigation method groups


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