대한치과의사협회지 (The Journal of the Korean dental association)

  • 제54권8호
  • /
  • Pages.640-650
  • /
  • 2016
  • /
  • 0376-4672(pISSN)
  • /
  • 2713-7961(eISSN)
대한치과의사협회 (The Korean Dental Association)
권호 표지

니켈티타늄 전동파일 파절의 예방 및 처치

Prevention and Solution of the Fracture of Nickel-Titanium Endodontic Instruments

  • 김현철 (부산대학교 치의학전문대학원 치과보존학교실)
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University)
  • 투고 : 2016.06.27
  • 심사 : 2016.07.11
  • 발행 : 2016.08.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Nickel-Titanium (NiTi) rotary instruments have brought a big step toward "efficient" practice of endodontic procedure. The rotary files help clinicians to reduce their working time and also increase the clinical success rate with minimal procedural errors. However, NiTi instruments still have a few drawbacks including unpredictable fatigue fracture. Clinicians may reduce the potential risk of instruments fracture by following some clinical guidelines for rotary instruments. In some clinical cases of instruments fracture, we may try to remove the instruments' fragments or bypass the fragment to reach the apical canal. In some limited cases, the fractured instruments' fragments would not jeopardize the clinical prognosis of root canal treatment. Nevertheless, it is impossible to be overemphasized that the prevention of file fracture is much easier than the removal of fracture fragment. Clinicians need to understand the fracture mechanisms and, in clinic, need to discard the used instruments timely.

키워드

참고문헌

  1. Walia HM, Brantley WA, Gerstein H. An initial investigation of the bending and torsional properties of Nitinol root canal files. J Endod 1988;14:346-51. https://doi.org/10.1016/S0099-2399(88)80196-1
  2. Thompson SA. An overview of nickel-titanium alloys used in dentistry. Int Endod J 2000;33:297-310. https://doi.org/10.1046/j.1365-2591.2000.00339.x
  3. Glosson CR, Haller RH, Dove SB, del Rio CE. A comparison of root canal preparations using Ni-Ti hand, Ni-Ti engine-driven, and K-Flex endodontic instruments. J Endod 1995;21:146-51. https://doi.org/10.1016/S0099-2399(06)80441-3
  4. Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod 2004;30:559-67. https://doi.org/10.1097/01.DON.0000129039.59003.9D
  5. Parashos P, Messer HH. Rotary NiTi instrument fracture and its consequences. J Endod 2006;32:1031-43. https://doi.org/10.1016/j.joen.2006.06.008
  6. Tzanetakis GN, Kontakiotis EG, Maurikou DV, Marzelou MP. Prevalence and management of instrument fracture in the postgraduate endodontic program at the Dental School of Athens: a fiveyear retrospective clinical study. J Endod 2008;34:675-8. https://doi.org/10.1016/j.joen.2008.02.039
  7. Kim HC, Yum J, Hur B, Cheung GS. Cyclic Fatigue and Fracture Characteristics of Ground and Twisted Nickel-Titanium Rotary Files. J Endod 2010;36:147-52. https://doi.org/10.1016/j.joen.2009.09.037
  8. Cheung GS, Oh SH, Ha JH, Kim SK, Park SH, Kim HC. Effect of torsional loading of nickel-titanium instruments on cyclic fatigue resistance. J Endod 2013;39:1593-7. https://doi.org/10.1016/j.joen.2013.07.032
  9. Kim HC, Cheung GSP, Lee CJ, Kim BM, Park JK, Kang SI. Comparison of Forces Generated During Root Canal Shaping and Residual Stresses of Three Nickel?Titanium Rotary Files by Using a Three-Dimensional Finite-element Analysis. J Endod 2008;34:743-7. https://doi.org/10.1016/j.joen.2008.03.015
  10. Kim HC, Kim HJ, Lee CJ, Kim BM, Park JK, Versluis A. Mechanical response of nickel-titanium instruments with different cross-sectional designs during shaping of simulated curved canals. Int Endod J 2009;42:593-602. https://doi.org/10.1111/j.1365-2591.2009.01553.x
  11. Kim HC, Lee MH, Yum J, Versluis A, Lee CJ, Kim BM. Potential Relationship between Design of Nickel-Titanium Rotary Instruments and Vertical Root Fracture. J Endod 2010;36:1195-9. https://doi.org/10.1016/j.joen.2010.02.010
  12. Kim JY, Cheung GS, Park SH, Ko DC, Kim JW, Kim HC. Effect from cyclic fatigue of nickeltitanium rotary files on torsional resistance. J Endod 2012;38:527-30. https://doi.org/10.1016/j.joen.2011.12.018
  13. Kim TO, Cheung GSP, Lee JM, Kim BM, Hur B, Kim HC. Stress distribution of three NiTi rotary files under bending and torsional conditions using a mathematic analysis. Int Endod J 2009;42:14-21. https://doi.org/10.1111/j.1365-2591.2008.01481.x
  14. Park SY, Cheung GS, Yum J, Hur B, Park JK, Kim HC. Dynamic Torsional Resistance of Nickel- Titanium Rotary Instruments. J Endod 2010;36:1200-4. https://doi.org/10.1016/j.joen.2010.02.016
  15. Spili P, Parashos P, Messer HH. The impact of instrument fracture on outcome of endodontic treatment. J Endod 2005;31:845-50. https://doi.org/10.1097/01.don.0000164127.62864.7c