Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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Study of endodontic working length of Korean posterior teeth

한국인의 구치부 근관작업장에 관한 연구

  • Kim, Jeong-Yeob (Department of Conservative Dentistry, Kyung Hee University School of Dentistry) ;
  • Lee, Sang-Hoon (Medical IS Team, Kyung Hee Management Company) ;
  • Lee, Gwang-Hee (Department of Dental Hygiene, Wonkwang Health Science University) ;
  • Park, Sang-Hyuk (Department of Conservative Dentistry, Kyung Hee University School of Dentistry)
  • 김정엽 (경희대학교 대학원 치의학과 치과보존학교실) ;
  • 이상훈 (경희 management company 의료정보팀) ;
  • 이광희 (원광보건대학 치위생과) ;
  • 박상혁 (경희대학교 대학원 치의학과 치과보존학교실)
  • Received : 2010.05.29
  • Accepted : 2010.08.30
  • Published : 2010.11.30
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Abstract

Objectives: The aim of this study was to investigate average working lengths of Korean posterior teeth and evaluate validity of endodontic file length. Materials and Methods: The endodontic working length of the posterior teeth of 670 Korean patients were measured than each mean value and standard deviation were investigated than the frequency deviation and standard deviation per each length were calculated. Results: Among the canals of premolar, 66.5% of canal length was marked under 20 mm by endodontic working length and 95.4% could be measured under 22 mm and Among the canals of molars, 95.5% of canal length was marked under 20 mm endodontic working length. Conclusions: With the result of measurement of endodontic working length of premolars of Korean, it suggested that 23 mm endodontic file is more proper than the 21 mm and 25 mm file on the market.

연구목적: 본 연구의 목적은 한국인의 근관 작업장에 대한 ISO규격의 근관 치료용 기구의 길이가 적절성을 평가하기 위한 것이다. 연구 재료 및 방법: 2006-2008년까지 경희의료원 동서신의학병원 보존과에서 구치부의 근관 치료를 받은 환자를 670명 선발하였다. 모든 근관 치료는 한 명의 술자에 의해 시행되었으며 통법의 와동을 형성하였고 변연 융선부터 0.5 mm의 교합면삭제를 시행하였다. 근관장은 전자 근관장 측정기(Root ZX)를 이용하여 측정하였고 방사선 사진으로 보정하였다. 근관장의 길이는 근관 성형 정도에 따라 달라지기 때문에 이 실험에서는 초기 근관장만을 이용하였다. 심한 우식이 있거나 보철물이 있는 경우, 근관이 석회화 되어서 정상적인 근관 치료를 할 수 없는 경우, 상악 대구치의 근심 설측 근관과 하악의 C-shape 근관을 가진 치아는 실험군에서 제외하였다. 총 487개 소구치 근관과 870개 대구치 근관의 근관장을 측정하였고 각각의 평균 및 표준편차를 측정하였다. 또한 각 길이별 빈도 분포 및 정규 분포를 관찰하였다. 결과: 1. 소구치 근관에서 20 mm 이하의 근관장을 갖는 경우는 전체의 66.5%였으며 22 mm 이하의 근관장을 갖는 경우는 전체의 95.4%였다. 2. 한국인의 소구치 근관장을 측정한 결과, 현재 시판중인 21 mm, 25 mm의 기구보다는 23 mm의 기구가 더 적절하였다. 결론: 한국인의 소구치 근관 치료시 21 mm, 25 mm의 기구보다는 23 mm의 기구가 더 적절하였으며 대구치의 경우 21 mm의 기구의 사용이 적절하다고 사료된다.

Keywords

References

  1. Kim S. Modern endodontic practice: instruments and techniques. Dent Clin North Am. 2004;48(1):1-9. https://doi.org/10.1016/j.cden.2003.12.002
  2. Barbakow F. The LightSpeed system. Dent Clin North Am. 2004;48(1):113-135. https://doi.org/10.1016/j.cden.2003.10.003
  3. Clauder T, Baumann MA. ProTaper NT system. Dent Clin North Am. 2004;48(1):87-111. https://doi.org/10.1016/j.cden.2003.10.006
  4. Hsu YY, Kim S. The ProFile system. Dent Clin North Am. 2004;48(1):69-85. https://doi.org/10.1016/j.cden.2003.11.006
  5. Mounce RE. The K3 rotary nickel-titanium file system. Dent Clin North Am. 2004;48(1):137-157. https://doi.org/10.1016/j.cden.2003.11.002
  6. Takatsuka S, Yoshida K, Ueki K, Marukawa K, Nakagawa K, Yamamoto E. Disc and condyle translation in patients with temporomandibular disorder. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005;99(5):614-621. https://doi.org/10.1016/j.tripleo.2004.08.024
  7. Nunez SC, Garcez AS, Suzuki SS, Ribeiro MS. Management of mouth opening in patients with temporomandibular disorders through low-level laser therapy and transcutaneous electrical neural stimulation. Photomed Laser Surg. 2006;24(1):45-49. https://doi.org/10.1089/pho.2006.24.45
  8. Kuttler Y. Microscopic investigation of root apexes. J Am Dent Assoc. 1955;50(5):544-552.
  9. Eliasson S, Lavstedt S, Ljungheimer C. Radiographic study of alveolar bone height related to tooth and root length. Community Dent Oral Epidemiol. 1986;14(3):169-171. https://doi.org/10.1111/j.1600-0528.1986.tb01525.x
  10. Forsberg J. Radiographic reproduction of endodontic “working length”comparing the paralleling and the bisecting-angle techniques. Oral Surg Oral Med Oral Pathol. 1987;64(3):353-360. https://doi.org/10.1016/0030-4220(87)90017-X
  11. Burch JG, Hulen S. The relationship of the apical foramen to the anatomic apex of the tooth root. Oral Surg Oral Med Oral Pathol. 1972;34(2):262-268. https://doi.org/10.1016/0030-4220(72)90418-5
  12. Dummer PM, McGinn JH, Rees DG. The position and topography of the apical canal constriction and apical foramen. Int Endod J. 1984;17(4):192-198. https://doi.org/10.1111/j.1365-2591.1984.tb00404.x
  13. Kim E, Lee SJ. Electronic apex locator. Dent Clin North Am. 2004;48(1):35-54. https://doi.org/10.1016/j.cden.2003.10.005
  14. Vajrabhaya L, Tepmongkol P. Accuracy of apex locator. Endod Dent Traumatol. 1997;13(4):180-182. https://doi.org/10.1111/j.1600-9657.1997.tb00035.x
  15. Czerw RJ, Fulkerson MS, Donnelly JC, Walmann JO. In vitro evaluation of the accuracy of several electronic apex locators. J Endod. 1995;21(11):572-575. https://doi.org/10.1016/S0099-2399(06)80988-X
  16. Ibarrola JL, Chapman BL, Howard JH, Knowles KI, Ludlow MO. Effect of preflaring on Root ZX apex locators. J Endod. 1999;25(9):625-626. https://doi.org/10.1016/S0099-2399(99)80323-9
  17. Shabahang S, Goon WW, Gluskin AH. An in vivo evaluation of Root ZX electronic apex locator. J Endod. 1996;22(11):616-618. https://doi.org/10.1016/S0099-2399(96)80033-1
  18. Cho.Y.L, Son.W.H, Hwnag.H.G. An accuracy of the several electronic apex locators on the mesial root canal of the mandibular molar J Kor Acad Cons Dent. 2005;30(6): 477-485. https://doi.org/10.5395/JKACD.2005.30.6.477
  19. Kim E, Fallahrastegar A, Hur YY, Jung IY, Kim S, Lee SJ. Difference in root canal length between Asians and Caucasians. Int Endod J. 2005;38(3):149-151. https://doi.org/10.1111/j.1365-2591.2004.00881.x
  20. Perzigian AJ. Allometric analysis of dental variation in a human population. Am J Phys Anthropol. 1981;54(3):341-345. https://doi.org/10.1002/ajpa.1330540307
  21. Cho.J.I, Jin.M.W, Kim.Y.K, Kim.S.K. Change of working length in curved canals by various instrumentation techniques. J Kor Acad Cons Dent. 2006;31(1):30-35. https://doi.org/10.5395/JKACD.2006.31.1.030
  22. Gulabivala K, Aung TH, Alavi A, Ng YL. Root and canal morphology of Burmese mandibular molars. Int Endod J. 2001;34(5):359-370. https://doi.org/10.1046/j.1365-2591.2001.00399.x
  23. Ng YL, Aung TH, Alavi A, Gulabivala K. Root and canal morphology of Burmese maxillary molars. Int Endod J. 2001;34(8):620-630. https://doi.org/10.1046/j.1365-2591.2001.00438.x
  24. Ahmed HA, Abu-bakr NH, Yahia NA, Ibrahim YE. Root and canal morphology of permanent mandibular molars in a Sudanese population. Int Endod J. 2007;40(10):766-771. https://doi.org/10.1111/j.1365-2591.2007.01283.x
  25. Pattanshetti N, Gaidhane M, Al Kandari AM. Root and canal morphology of the mesiobuccal and distal roots of permanent first molars in a Kuwait population-a clinical study. Int Endod J. 2008;41(9):755-762. https://doi.org/10.1111/j.1365-2591.2008.01427.x
  26. Peiris HR, Pitakotuwage TN, Takahashi M, Sasaki K, Kanazawa E. Root canal morphology of mandibular permanent molars at different ages. Int Endod J. 2008;41(10):828-835. https://doi.org/10.1111/j.1365-2591.2008.01428.x
  27. Park.S.H, Noh.B.H, Hwang.H.G. A Comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar. J Kor Acad Cons Dent. 2004;29(6):541-547. https://doi.org/10.5395/JKACD.2004.29.6.541

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