Open Access, Peer-reviewed
eISSN 2234-7666
    J Korean Acad Conserv Dent. 2003 Jan;28(1):50-56. Korean.
    Published online Jan 31, 2003.
    https://doi.org/10.5395/JKACD.2003.28.1.050
    Copyright © 2003 Korean Academy of Conservative Dentistry
    Original Article

    The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation

    Jin-Soo Kwon, Hee-Joo Lee, and Bock Hur
      • Department of Conservative dentistry, Collage of Dentistry, Pusan National University, Korea.
    • Corresponding author (Email: hjolee@pusan.ac.kr )

    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.

    Abstract

    The purpose of this study was to evaluate the effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation. Forty-eight single-rooted teeth were used in this study. The teeth were instrumented up to a size 40 K-file and irrigated with 2.5% NaOCl between each file size. And the teeth were divided into 4 groups. In group A, the root canals were irrigated with a final flush of 5ml 2.5% NaOCl as a control group. The teeth in group B were irrigated with a final flush of 5ml 17% EDTA. The teeth in group C and D were irradiated by pulsed Nd:YAG laser(laser parameters were set at 1W, 100mJ, 10Hz, and 2W, 100mJ, 20Hz respectively).

    The results were as follows:

    1. Apical leakage was observed in 50% of samples in group A, 30% of samples in group B, 20% of samples in group C, and 10% of samples in group D.

    2. The teeth in group B had less leakage than group A, but there was no statistically significant differences(p>0.05).

    3. The teeth in group C, D had less leakage than group A, and there was statistically significant differences(p<0.05).

    4. The teeth in group C, D had less leakage than group B, but there was no statistically significant differences(p>0.05).

    5. There was no significant differences in apical leakage between group C and group D(p>0.05).

    Keywords
    EDTA; ND:YAG laser; Smear layer; Microleakage

    Figures

    Fig. 1
    Group A(2.5% NaOCl)

    Fig. 2
    Group B(17% EDTA)-Middle 1/3

    Fig. 3
    Group B(17% EDTA)-Apical 1/3

    Fig. 4
    Group C(1W, 100mJ, 10Hz Nd: YAG laser, parallel to canal wall

    Fig. 5
    Group D(2W, 100mJ, 20Hz Nd: YAG laser, parallel to canal wall

    Fig. 6
    Additional specimen(1W, 100mJ, 10Hz Nd:YAG laser, perpendicular to canal wall

    Fig. 7
    Additional specimen(2W, 100mJ, 20Hz Nd:YAG laser, perpendicular to canal wall

    Tables

    Table 1
    Classification of groups

    Table 2
    Criteria for degree of dye penetration

    Table 3
    Score for apical leakage

    References

      1. McComb D, Smith DC. A preliminary scanning electron microscopic study of root canals after endodontic procedures. J Endod 1975;1:238–242.
      1. Vojinović O, Nyborgh H, Brõnnstrõm M. Acid treatment of cavities under resin fillings: Bacterial growth in dentinal tubules and pulpal reactions. J Dent Res 1973;52:1189–1193.
      1. Michelich VJ, Schuster GS, Pashley DH. Bacterial penetration of human dentine in vitro. J Dent Res 1980;59:1398–1403.
      1. Diamond A, Carrel R. The smear layer: a review of restorative progress. J Pedod 1984;8:219–226.
      1. Baker NA, Eleazer PD, Averbach RE, Seltzer S. Scanning electron microscopic study of the efficacy of various irrigation solutions. J Endod 1975;1:127–135.
      1. Yamada RS, Armas A, Goldman M, Lin PS. A scanning electron microscopic comparison of a high volume final flush with several irrigation solutions: Part III. J Endod 1983;9:137–142.
      1. Meryon SD, Jakeman KJ, Browne RM. Penetration in vitro of human and ferret dentine by three bacterial species in relation to their potential role in pulpal inflammation. Int Endod J 1986;19:213–220.
      1. Madison S, Krell KV. Comparison of ethylene diamine tetraacetic acid and sodium hypochlorite on the apical seal of endodontically treated teeth. J Endod 1984;10:499–503.
      1. Evans JT, Simon JH. Evaluation of the apical seal produced by injected thermoplasticized gutta-percha in the absence of smear layer and root canal sealer. J Endod 1986;12:100–107.
      1. Kennedy WA, Walker WA, Gough RW. Smear layer removal effects on apical leakage. J Endod 1986;12:21–27.
      1. Cergneux M, Ciucchi B, Dietschi JM, Holz J. The influence of smear layer on the sealing ability of canal obturation. Int Endod J 1987;20:228–232.
      1. Saunders WP, Saunders EM. The effect of smear layer upon the coronal leakage of gutta-percha root fillings and a glass ionomer sealer. Int Endod J 1992;25:245–249.
      1. Sen BH, Wesselink PR, Turkun M. The smear layer: a phenomenon in root canal therapy. Int Endod J 1995;28:141–148.
      1. Baumgartner JC, Mader CL. A scanning electron microscopic evaluation of four root canal irrigation regimens. J Endod 1987;13:147–157.
      1. Pashley EL, Birdsong NL, Bowman K, Pashley DH. Cytotoxic effects of NaOCl on vital tissues. J Endod 1985;11:525–528.
      1. Goldman LB, Goldman M, Kronman JH, Lin PS. The efficacy of several irrigation solutions for endodontics: A scanning electron microscopic study. Oral Surg Oral Med Oral Pathol 1981;52:197–204.
      1. Weine FS. In: Endodontic therapy. 5th edn. St. Louis: Mosby; 1996.
      1. Kimura Y, Wilder-Smith P, Matsumoto K. Laser in endodontics: a review. Int Endod J 2000;33:173–185.
      1. Dederich D, Zakariasen K, Tulip J. Scanning electron microscopic analysis of root canal wall dentin follow Neodymium Yttrium garnet laser irradiation. J Endod 1984;10:428–431.
      1. Levy G. Cleaning and shaping the root canal with a Nd:YAG laser beam: a comparative study. J Endod 1992;18:123–127.
      1. Goya C, Yamazaki R, Tomita Y, Kimura Y, Matsumoto K. Effects of pulsed Nd:YAG laser irradiation on smear layer at the apical stop and apical leakage after obturation. Int Endod J 2000;33:266–271.
      1. Williams S, Goldman M. Penetrability of the smeared layer by a strain of Proteus vulgaris. J Endod 1985;11:385–388.
      1. Goldman M, Goldman LB, Cavaleri R, Bogis J, Lin PS. The efficacy of several irrigation solutions for endodontics: A scanning electron microscopic study: Part II. J Endod 1982;8:487–492.
      1. Fraser JG. Chelating agents: Their softening effect on root canal dentin. Oral Surg Oral Med Oral Pathol 1974;37:803–811.
      1. Verdelis K, Eliades G, Oviir T, Margelos J. Effect of chelating agents on the molecular composition and extent of decalcification at cervical, middle and apical root dentin locations. Endod Dent Traumatol 1999;15:164–170.
      1. Takeda F, Harashima T, Kimura Y, Matsumoto K. A comparative study of the removal of smear layer by three endodontic irrigants and two types of laser. Int Endod J 1999;32:32–39.
      1. Tani Y, Kawada H. Effects of laser irradiation on dentin. 1. Effect on smear layer. Dent Mater J 1987;6:127–134.
      1. Saunders WP, Whitters CJ, Strang R, Moseley H, Payne AP, McGadey J. The effect of an Nd:YAG pulsed laser on the cleaning of the root canal and the formation of a fused apical plug. Int Endod J 1995;28:213–220.
      1. Anic I, Segovic S, Katanec D, Prskalo K, Najzar-Fleger D. Scanning electron microscopic study of dentin lased with argon, CO2, and Nd:YAG laser. J Endod 1998;24:77–81.
      1. Harashima T, Takeda FH, Kimura Y, Matsumoto K. Effect of Nd:YAG laser irradiation for removal of intracanal debris and smear layer in extracted human teeth. J Clin Laser Med Surg 1997;15:131–135.
    MeSH Terms
    Dental Pulp Cavity
    Edetic Acid*
    Smear Layer
    Tooth
    Metrics
    Share
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    Tables
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