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The effect of MTAD on the apical leakage of obturated root canals: an electrochemical study

MTAD의 치근단 누출에 미치는 영향에 대한 전기화학적 연구

  • Park, Dong-Sung (Department of Conservative Dentistry, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 박동성 (성균관대학교 의과대학 삼성서울병원 치과보존과)
  • Published : 2006.03.01

Abstract

The purpose of this study was to evaluate the effect of newly developed endodontic root canal cleanser (MTAD) on the apical leakage of obturated root canal using an electrochemical method. Canals of 60 extracted single-rooted human teeth were prepared by using a crown-down technique with rotary nickel-titanium files. In Group 1 (positive control group) and 2 (negative centre) group), 5.25% NaOCl was used as a canal irrigant and no canal wall treatment was done. In group 3 only 5.25% NaOCl were used as canal irrigant, canal wall treatment and final rinse. In group 4, specimens were irrigated with 5.25% NaOCl, treated with 5 ml of 17% EDTA for 5 minutes and final rinsed with 5.25% NaOCl Specimens of group 5 were irrigated with 1 3% NaOCl and treated with 5 ml of MTAD for 5 minutes. All root canals are dried with paper points and obtuated with gutta-percha and AH plus as a sealer using a continuous wave of condensation technique except in the group 1. The electrical resistance between the standard and experimental electrodes in canals was measured over a period of 10 days. Rising of apical leakage with time was observed for all the groups. Group 4 and 5 showed lower apical leakage than group 3 but differences between the group 3, 4 and 5 were no statistical significance at any measurement time.

본 연구는 새로이 개발된 근관세정제 (MTAD)가 근관 충전이 이루어지고 난 치근단 누출에 미치는 영향을 평가해 보고자 하였다. 일반적인 방법의 근관 성형과 세정 그리고 충전을 시행하는데 있어 실험군 들에서는 NaOCl만, NaOCl과 EDTA, NaOCl과 MTAD를 사용하였고 10일 동안 표준전극과 시편 근관 내에 위치시킨 실험전극 사이의 전기저항을 측정하여 시간에 따른 치근단 누출의 변화를 비교 평가하였다. 실험결과 측정 시간 30분에서 7일 사이에서 smear layer 제거한 군들 (Group 4와 5)에서 제거하지 않은 군(Group 3)에서 보다 적은 치근단 누출을 보였지만 통계학적인 유의성있는 차이를 나타내지는 않았다 실험군들 사이에서 모든 시간 대에 걸쳐 치근단 누출의 유의성 있는 차이를 관찰할 수 없었다.

Keywords

References

  1. McComb D, Smith DC. A preliminary scanning electron microscopic study of root canals after endodontic procedures. J Endodon 1(7):238-242, 1975 https://doi.org/10.1016/S0099-2399(75)80226-3
  2. Torabinejad M, Handysides R, Khademi A. Bakland LK. Clinical implications of the smear layer in endodontics: a review. Oral Surg Oral Med Oral Path Oral Radiol Endo 94(6) :658-666, 2002 https://doi.org/10.1067/moe.2002.128962
  3. Baumgartner JC, Mader CL.A scanning electron microscopic evaluation of four root canal irrigation regimens. J Endodon 13(4):147-157, 1987 https://doi.org/10.1016/S0099-2399(87)80132-2
  4. Yamada RS, Armas A, Goldman M, Lin PS. A scanning electron microscopic comparison of a high volume flush with several irrigating solutions. Part 3. J Endodon 9(4):137-142, 1983 https://doi.org/10.1016/S0099-2399(83)80032-6
  5. Gettleman BH. Messer HH, ElDeeb ME. Adhesion of sealer cements to dentin with and without the smear layer. J Endodon 17(1): 15-20, 1991 https://doi.org/10.1016/S0099-2399(07)80155-5
  6. Economides N. Liolios E, Kolokuris I. Beltes P. Longterm evaluation of the influence of smear layer removal on the sealing ability of different sealers. J Endodon 25(2):123-25, 1999 https://doi.org/10.1016/S0099-2399(99)80010-7
  7. Kennedy WA, Walker WA, Gough RW. Smear layer removal effects on apical leakage. J Endodon 12(1): 21-27, 1986 https://doi.org/10.1016/S0099-2399(86)80277-1
  8. Cergneux M. Ciucchi B. Dietschi JM, Holz J. The influence of the smear layer on the sealing ability of canal obturation. Int Endod J 20(5): 228-232, 1987 https://doi.org/10.1111/j.1365-2591.1987.tb00619.x
  9. Vassiliadis L, Liolios E, Kouvas V, Economides N. Effect of smear layer on coronal microleakage. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 82(3): 315-320, 1996 https://doi.org/10.1016/S1079-2104(96)80359-3
  10. Taylor JK, Jeansonne BO, Lemon RR. Coronal leakage: Effects of smear layer, obturation technique, and sealer. J Endodon 23(8):508-512, 1997 https://doi.org/10.1016/S0099-2399(97)80311-1
  11. Karagdz-Kucukay I. Bayirli O. An apical leakage study in the presence and absence of the smear layer. Int Endod J 27(2) :87-93, 1994 https://doi.org/10.1111/j.1365-2591.1994.tb00236.x
  12. SaundersWP, Saunders EM. The effect of smear layer upon the coronal leakage of gutta percha root filling and a glass ionomer sealer. Int Endod J 25(5) :245-249, 1992 https://doi.org/10.1111/j.1365-2591.1992.tb01157.x
  13. Evans JT, Simon JHS. Evaluation of the apical seal produced by injected thermoplasticized gutta-percha in the absence of smear layer and root canal sealer. J Endodon 12(3): 101-107, 1986 https://doi.org/10.1016/S0099-2399(86)80299-0
  14. Chailertvanitkul P, Saunders WP, Mackenzie D. The effect of smear layer on microbial coronal leakage of gutta-percha root fillings. Int Endod J 29(4) :242-248, 1996 https://doi.org/10.1111/j.1365-2591.1996.tb01376.x
  15. Saunders WP, Saunders EM. Influence of smear layer and the coronal leakage of thermafil and laterally condensed gutta-percha root fillings with a glass ionomer sealer. J Endodon 20(4): 155-158, 1994 https://doi.org/10.1016/S0099-2399(06)80325-0
  16. Madison S, Krell KV. Comparison of ethylenediamine tetracetic acid and sodium hypochlorite on the apical seal of endodontically treated teeth. J Endodon 10(10) :499-503, 1984 https://doi.org/10.1016/S0099-2399(84)80208-3
  17. Timpawat S, Sripanaratanakul S. Apical sealing ability of glass ionomer sealer with and without smear layer. J Endodon 24(5): 343-345, 1998 https://doi.org/10.1016/S0099-2399(98)80131-3
  18. Timpawat S, Vongsavan N, Messer HH. Effect of removal of the smear layer on apical microleakage. J Endodon 27(5):351-353, 2001 https://doi.org/10.1097/00004770-200105000-00011
  19. Torabinejad M, Khademi AA, Babagoli J, Cho Y, Johnson WB, Bozhilov K, Kim J, Shabahang S. A new solution for the removal of the smear layer. J Endodon 29(3):170-175, 2003 https://doi.org/10.1097/00004770-200303000-00002
  20. DS Park, HJ Lee, HM Yoo and TS Oh. Effect of N d: YAG laser irradiation on the apical leakage of obturated root canals: an electrochemical study. Int Endodon J, 34(4): 318-321. 2001 https://doi.org/10.1046/j.1365-2591.2001.00397.x
  21. Baumgartner JC, Brown CM, Mader CL, Peters DD, Shulman JD. A scanning electron microscopic evaluation of root canal debridement using saline, sodium hypochlorite and citric acid. J Endodon 10(1): 525-531. 1984 https://doi.org/10.1016/S0099-2399(84)80137-5
  22. Torabinejad M, Cho Y, Khademi AA, Bakland LK, Shabahang S. The effect of various concentrations of sodium hypochlorite on the ability of MTAD to remove smear layer. J Endodon 29(4) :233-239, 2003 https://doi.org/10.1097/00004770-200304000-00001
  23. Delivanis PD, Chapman KA. Comaprison and reliability of techniques for measuring leakage and marginal penetrations. Oral Surg 53(4) :410-416, 1982 https://doi.org/10.1016/0030-4220(82)90444-3

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