Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지
DOI QR코드

DOI QR Code

Step by Step Analysis of Root Canal Instrumentation with ProTaper®

ProTaper를 이용한 근관 형성의 단계별 분석

  • Kim, Mi-Hee (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Huh, Bock (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, School of Dentistry, Pusan National University)
  • 김미희 (부산대학교 치과대학 치과보존학교실) ;
  • 허복 (부산대학교 치과대학 치과보존학교실) ;
  • 김현철 (부산대학교 치과대학 치과보존학교실) ;
  • 박정길 (부산대학교 치과대학 치과보존학교실)
  • Published : 2006.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to investigate influence of each file step of $ProTaper^{(R)}$ system on canal transportation. Twenty simulated canals were prepared with either engine-driven $ProTaper^{(R)}$ or manual $ProTaper^{(R)}$, Group R-resin blocks were instrumented with rotary $ProTaper^{(R)}$ and group M-resin blocks were instrumented with manual $ProTaper^{(R)}$. Pre-operative resin blocks and post-operative resin blocks after each file step preparation were scanned. Original canal image and the image after using each file step were superimposed for calculation of centering ratio The image after using each file step alld image after using previous file step were superimposed for calculation of the amount of deviation. Measurements were taken horizontally at five different levels (1 2, 3, 4 and 5 mm) from the level of apical foramen. In rotary $ProTaper^{(R)}$ instrumentation group, centering ratio and the amount of deviation of each step at all levels were not significantly different (p>0.05). In manual $ProTaper^{(R)}$ instrumentation group, centering ratio and the amount of deviation of each step at all levels except of 1 mm were not significantly different (p>0.05). At the level of 1 mn, F2 file step had significantly large centering ratio and the amount of deviation (p<0.05). Under the condition of this study, F2 file step of manual ProTaper tended to transport the apical part of the canals than that of rotary $ProTaper^{(R)}$.

이 연구의 목적은 $ProTaper^{(R)}$ system을 사용하였을 때, 각 단계별로 근관 형성 결과를 분석 하는 것이다. 20개의 레진 블락을 근관 성형 방법에 따라, 엔진 구동형 $ProTaper^{(R)}$로 전체 근관을 성형한 군을 R군, 수동형 $ProTaper^{(R)}$로 전체 근관을 성형한 군을 M군으로 하였다. 근관의 술 전, 술 후 이미지를 각 파일 단계별로 스캔한 후, 중심이동률 산출을 위해 원래의 근관 이미지와 각 단계의 파일 사용후의 이미지를 각각 중첩하였고, 근관의 변위량 산출을 위해 각 단계의 파일 사용후의 이미지와 직전 파일 사용후의 이미지를 중첩하였다. 근단공으로부터의 수직거리 1 2, 3, 4그리고 5mm위치에서 중심이동률과 근관의 변위량을 측정하였다. 실험 결과 R군의 모든지점에서 각 단계별 중심이동률과 근관 변위량은 각각 유의한 차이가 없었다 (p<0.05). M군에서 1 mm를 제외한 모든 지점에서 각 단계별 중심 이동률과 근관 변위 량은 각각 유의한 차이가 없었다 (p<0.05). 그러나 M군의 1mm 지점에서 F2 file step은 통계학적으로 큰 중심 이동률과 근관 변위량을 보였다 (p<0.05). 본 연구의 결과에서 엔진 구동형 $ProTaper^{(R)}$ 사용 시에는 각 파일 단계별 근관 변위 정도에 유의한 차이가 없었으나, 수동형 ProTaper로 근관 성형을 하였을 때 , F2 file step에서 특히 근관 변위가 크게 나타났다.

Keywords

References

  1. European Society of Endodontology. Consensus report of the European Society of Endodontology on quality guidelines for endodontic treatment. Int Endod J 27:115-124, 1994 https://doi.org/10.1111/j.1365-2591.1994.tb00240.x
  2. Schilder H. Cleaning and shaping the root canal. Dent Clin North Am 18:269-296, 1974
  3. Al-Omari MAO, Dummer PMH, Newcombe RG. Comparison of six files to prepare simulated root canals. Part 2. Int Endod J 25:67-81, 1992 https://doi.org/10.1111/j.1365-2591.1992.tb00739.x
  4. Briseno BM, Sonnabend E. The Influence of different root canal instruments on root canal preparation: an in vitro study. Int Endod J 24:15-23, 1991 https://doi.org/10.1111/j.1365-2591.1991.tb00865.x
  5. Schafer E, Tepal J, Hoppe W. Properties of endodontic hand instruments used in rotary motion. Part 2. Instrumentation of curved canals. J Endod 21:493-497, 1995 https://doi.org/10.1016/S0099-2399(06)80519-4
  6. Abou-Rass M, Frank AL, Glick DH. The anticurvature filing method to prepare the curved root canal. J Am Dent Assoc 101(5):792-794, 1980 https://doi.org/10.14219/jada.archive.1980.0427
  7. Walia H, Brantley WA, Gerstein H. An initial investigation of the bending and torsional properties of Nitinol root canal files. J Endod 14:346-351, 1988 https://doi.org/10.1016/S0099-2399(88)80196-1
  8. Camps JJ, Pertot WJ. Tortional and stiffness properties of nickel-titanium K-files. Int Endod J 28:239-243, 1995 https://doi.org/10.1111/j.1365-2591.1995.tb00307.x
  9. Schafer E. Root canal instruments for manual use: a review. Endod Dent Traumatol 13:51-64, 1997 https://doi.org/10.1111/j.1600-9657.1997.tb00011.x
  10. Glosson CR, Hallor 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 21:146-151, 1995 https://doi.org/10.1016/S0099-2399(06)80441-3
  11. Schafer E. Shaping ability of Hero 642 rotary Nickel-titanium instruments and stainless steel hand K-Flexofiles in simulated curved root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 92(2):215-220, 2001 https://doi.org/10.1067/moe.2001.114622
  12. Hata G, Demura M, Kato AS, Imura N, Novo NF, Toda T. A comparison of shaping ability using ProFile, GT file, and Flex-R endodontic instruments in simulated canals. J Endod 28(4):316-321, 2002 https://doi.org/10.1097/00004770-200204000-00014
  13. Ankrum MT, Hartwell GR, Trutt JE. K3 Endo, ProTaper, and ProFile systems: breakage and distortion in severely curved root of molars. J Endod 30(4):234-237, 2004 https://doi.org/10.1097/00004770-200404000-00013
  14. Ruddle CJ. The ProTaper Technique: Endodontics Made Easier. Dent Today 20(11):58-68, 2001
  15. Thomas Clauder, Michael A, Baumann. ProTaper NT system. Dent Clin North Am 48:87-111, 2004 https://doi.org/10.1016/j.cden.2003.10.006
  16. Peters OA, Peters CI, Schoneberger K, Barbakov F. ProTaper rotary root canal preparation : effect of canal anatomy on final shape analyzed by micro CT. Int Endod J 36:86-92, 2003 https://doi.org/10.1046/j.1365-2591.2003.00626.x
  17. CH Lee, KM Cho, CU Hong. Effect of various canal preparation techniques using rotary Nickel-Titanium files on the maintenance of canal curvature. J Kor Acad Cons Dent 28(1):41-49, 2003 https://doi.org/10.5395/JKACD.2003.28.1.041
  18. Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol 32(2):271-275, 1971 https://doi.org/10.1016/0030-4220(71)90230-1
  19. Bergmans L, Van Cleynenbreugel J, Beullens M, Wevers M, Van Meerbeek B, Lambrechs P. Progressive versus constant tapered shaft design using NiTi rotary instruments. Int Endod J 36:288-295, 2003 https://doi.org/10.1046/j.1365-2591.2003.00650.x
  20. Tulsa Dental Products. ProTaper manufacturer's instructions for use. Tulsa; Tulsa Dental Products, 2001
  21. Michael Szasz GDP. ProTaper for hand use-The Experience of a GDP. Dentsply united kingdom - articles (http://www.dentsply.co.uk)
  22. Julien Webber. Hand ProTaper-Shaping the Future. Dentsply united kingdom - articles (http://www.dentsply.co.uk)
  23. Berutti E, Chiandussi G, Bavaglio I, Ibba A. Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments: ProTaper versus ProFile. J Endod 29(1):15-19, 2003 https://doi.org/10.1097/00004770-200301000-00005
  24. Calberson FL, Deroose CA, Hommez GM, De Moor RJ. Shping ability of ProTaper nickel-titanium files in simulated resin root canals. Int Endod J 37:613-623, 2004 https://doi.org/10.1111/j.1365-2591.2004.00860.x
  25. Iqbal MK, Firic S, Tulcan J, Karabucak B, Kim S. Comparison of apical transportation between ProFile and ProTaper NiTi rotary instruments. Int Endod J 37:359-364, 2004 https://doi.org/10.1111/j.1365-2591.2004.00792.x
  26. Yoshimine Y, Ono M, Akamine A. The shaping effects of three nickel-titanium rotary instruments in simulated s-shaped canals. J Endod 31(5):373-375, 2005 https://doi.org/10.1097/01.don.0000140568.40462.43
  27. Schafer E, Vlassis M. Comparative investigation of two rotary nickel-titanium instruments: ProTaper versus RaCe. Part 1. Shaping ability in simulated curved canals. Int Endod J 37:229-238, 2004 https://doi.org/10.1111/j.0143-2885.2004.00786.x
  28. Yun H, Kim SK. A comparison of the shaping abilities of 4 nickel-titanium rotary instruments in simulated root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 95:228-233, 2003 https://doi.org/10.1067/moe.2003.92