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HOME > Restor Dent Endod > Volume 33(6); 2008 > Article
Original Article Reconsideration of treatment protocol on the reduction of Enterococcus faecalis associated with failed root canal treatment
Woo Cheol Lee, Seong-Tae Hong, WonJun Shon
2008;33(6):-569.
DOI: https://doi.org/10.5395/JKACD.2008.33.6.560
Published online: November 30, 2008

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Corresponding Author: Woo Cheol Lee. Department of Conservative Dentistry, School of Dentistry, Seoul National University & Dental Research Institute, 28 YunGun-Dong, JongNo-Gu, Seoul, Korea. 110-749, Tel: 82-2-2072-1634, Fax: 82-2-2072-3859, jimin525@snu.ac.kr
• Received: September 23, 2008   • Revised: October 21, 2008   • Accepted: October 23, 2008

Copyright © 2008 The Korean Academy of Conservative Dentistry

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  • Microorganism survived in the root canal after root canal cleaning and shaping procedure is a main cause of root canal treatment failure. There are several mechanisms for the bacteria to survive in the root canal after chemomechanical preparation and root canal irrigation. Bacteria organized as biofilm has been suggested as an etiology of persistent periapical lesion. Recent studies were focus on removal of Enterococcus faecalis biofilm due to the report that the persistence of this bacteria after root canal treatment may be associated with its ability to form biofilm. Several investigations demonstrated that current root canal treatment protocol including use of NaOCl, EDTA and Chlorhexidine as irrigants is quite effective in eliminating E. faecalis biofilm. However, this microorganism still can survive in inaccessible areas of root canal system and evade host immune response, suppress immune activity and produce biofilm. Up to date, there is no possible clinical method to completely get rid of bacteria from the root canal. Once the root canal treatment failure occurred, and conventional treatment incorporating current therapeutic protocol has failed, periapical surgery or extraction should be considered rather than prolong the ineffected retreatment procedure.
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        Reconsideration of treatment protocol on the reduction of Enterococcus faecalis associated with failed root canal treatment
        J Korean Acad Conserv Dent. 2008;33(6):560-569.   Published online November 30, 2008
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      Reconsideration of treatment protocol on the reduction of Enterococcus faecalis associated with failed root canal treatment
      Reconsideration of treatment protocol on the reduction of Enterococcus faecalis associated with failed root canal treatment
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