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HOME > Restor Dent Endod > Volume 35(2); 2010 > Article
Basic Research The comparison of different canal irrigation methods to prevent reaction precipitate between sodium hypochlorite and chlorhexidine
Moon-Sun Choi, Se-Hee Park, Kyung-Mo Cho, Jin-Woo Kim
2010;35(2):-87.
DOI: https://doi.org/10.5395/JKACD.2010.35.2.080
Published online: March 31, 2010

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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, 210-702, Korea. Tel: 82-33-640-2470, Fax: 82-33-642-6410, mendo7@gwnu.ac.kr
• Received: February 25, 2010   • Revised: March 4, 2010   • Accepted: March 5, 2010

Copyright © 2010 Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare the different canal irrigation methods to prevent the formation of precipitate between sodium hypochlorite (NaOCl) and chlorhexidine (CHX).
    Extracted 50 human single-rooted teeth were used. The root canals were instrumented using NiTi rotary file (Profile .04/#40) with 2.5% NaOCl and 17% EDTA as irrigants. Teeth were randomly divided into four experimental groups and one control group as follows; Control group: 2.5% NaOCl only, Group 1: 2.5% NaOCl + 2% CHX, Group 2: 2.5% NaOCl + paper points + 2% CHX, Group 3: 2.5% NaOCl + preparation with one large sized-file + 2% CHX, Group 4: 2.5% NaOCl +95% alcohol+ 2% CHX.
    The teeth were split in bucco-lingual aspect and the specimens were observed using Field Emission Scanning Electron Microscope. The percentages of remaining debris and patent dentinal tubules were determined. Statistical analysis was performed with one-way analysis of variance (ANOVA). Energy Dispersive x-ray Spectroscopy was used for analyzing the occluded materials in dentinal tubule for elementary analysis.
    There were no significant differences in percentage of remaining debris and patent tubules between all experimental groups at all levels (p > .05).
    In elementary analysis, the most occluded materials in dentinal tubule were dentin debris. NaOCl/CHX precipitate was detected in one tooth specimen of Group 1.
    In conclusion, there were no significant precipitate on root canal, but suspected material was detected on Group 1. The irrigation system used in this study could be prevent the precipitate formation.
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Figure 1
Representative FE-SEM micrographs of root surface (2,000 ×).
jkacd-35-80-g001.jpg
Figure 2
Elementary analysis of occluded materials in dentinal tubule on FE-SEM micrograph (10,000 ×).
jkacd-35-80-g002.jpg
Table 1
Mean percentage of remaining debris (Mean ± SD)
jkacd-35-80-i001.jpg
Table 2
Mean percentage of patent dentinal tubules (Mean ± SD)
jkacd-35-80-i002.jpg

Tables & Figures

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    • Analysis of para-chloroaniline after chemical interaction between alexidine and sodium hypochlorite using mass spectrometry: A preliminary study
      Hyeon-Sik Kim, Seung-Hyun Han, Soram Oh, Sang-Min Lim, Yu Gu, Kee-Yeon Kum
      Journal of Korean Academy of Conservative Dentistry.2010; 35(4): 295.     CrossRef

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      The comparison of different canal irrigation methods to prevent reaction precipitate between sodium hypochlorite and chlorhexidine
      J Korean Acad Conserv Dent. 2010;35(2):80-87.   Published online March 31, 2010
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    The comparison of different canal irrigation methods to prevent reaction precipitate between sodium hypochlorite and chlorhexidine
    Image Image
    Figure 1 Representative FE-SEM micrographs of root surface (2,000 ×).
    Figure 2 Elementary analysis of occluded materials in dentinal tubule on FE-SEM micrograph (10,000 ×).
    The comparison of different canal irrigation methods to prevent reaction precipitate between sodium hypochlorite and chlorhexidine

    Mean percentage of remaining debris (Mean ± SD)

    Mean percentage of patent dentinal tubules (Mean ± SD)

    Table 1 Mean percentage of remaining debris (Mean ± SD)

    Table 2 Mean percentage of patent dentinal tubules (Mean ± SD)


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