바로가기메뉴

본문 바로가기 주메뉴 바로가기

ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

logo

메뉴

한국인의 상악 제 2대구치치근단면 형태에 대한 연구

Prevalence of Various Anatomic Variations in Cross-sectioned Apices of Maxillary Second Molars in Korean and Their Effect on Canal Cleanliness

Abstract

Purpose: This study evaluated the apical root canal system of maxillary second molars, in which conventional endodontic treatment had failed. Materials and Methods: One hundred eighteen extracted endodontically failed maxillary second molars were examined to investigate the root canal morphology using clinical photographs. High-resolution cross-sectional images at the 3mm level from the root apices were taken to evaluate the anatomic variations and canal cleanliness. The incidence of anatomic variations and canals containing debris were evaluated statistically. Results: One (0.85%) maxillary second molar had four separate roots, while 52 (44.07%) had three separate roots. The remaining 65 (55.08%) showed 6 different types of fusion in their roots. As the number of fused roots increased from none to three, the incidence of isthmuses in the cross-sectional images increased significantly from 43.40% to 76.92% in 2-root fusion and 88.46% in 3-root fusion. In addition, the occurrence of less-cleansed canals increased from 22.64% to 38.46% and 53.85%, respectively (p<0.05). Sixty four teeth (54.24%) had 3 canals while 38(32.2%) had additional canals; most of them were located in the MB roots (81.58%). Seventy six (64.41%) had isthmuses in the apical region and 58 out of 76 were located in MB roots. Condlusions: Logistic analysis indicated that the less division of roots was associated significantly with the occurrence of insufficient cleaning during endodontic treatment (OR=1.765, p<0.05), while the presence of an additional canal showed no association.

keywords
Endodontics, Retreatment, Root canal anatomy, Maxillary second molar

참고문헌

1.

Fariniuk LF, Baratto-Filho F, da Cruz-Filho AM, de Sousa-Neto MD. Histologic analysis of the cleaning capacity of mechanical endodontic instruments activated by the ENDOflash system. J Endod 2003;29:651-3.

2.

Rodig T, Hulsmann M, Muhge M, Schafers F. Quality of preparation of oval distal root canals in mandibular molars using nickel-titanium instruments. Int Endod J 2002;35:919-28.

3.

Vertucci FJ. Root canal morphology and its relationship to endodontic procedures. Endodontic topics 2005;10:3-29.

4.

Hsu YY, Kim S. The resected root surface. The issue of canal isthmuses. Dent Clin North Am 1997;41:529-40.

5.

Weller RN, Niemczyk SP, Kim S. Incidence and position of the canal isthmus. Part 1. Mesiobuccal root of the maxillary first molar. J Endod 1995;21:380-3.

6.

Sen BH, Wesselink PR, Turkun M. The smear layer: a phenomenon in root canal therapy. Int Endod J 1995;28:141-8.

7.

Shovelton DS. The presence and distribution of microorganisms within non vital teeth. Br Dent J 1964;117:101-07.

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 1987;20:228-32.

9.

Moura MS, Guedes OA, De Alencar AH, Azevedo BC, Estrela C. Influence of length of root canal obturation on apical periodontitis detected by periapical radiography and cone beam computed tomography. J Endod 2009;35:805-9.

10.

Li-na Z, Wen-hao Q, Jin H. A cone-beam computed tomography study of changes in canal isthmus of maxillary first premolars before and after instrumentation. Shanghai Journal of Stomatology 2013;22:41-45.

11.

Endal U, Shen Y, Knut A, Gao Y, Haapasalo M. A high-resolution computed tomographic study of changes in root canal isthmus area by instrumentation and root filling. J Endod 2011;37:223-7.

12.

Zhang Q, Chen H, Fan B, Fan W, Gutmann JL. Root and root canal morphology in maxillary second molar with fused root from a native Chinese population. J Endod 2014;40:871-5.

13.

al Shalabi RM, Omer OE, Glennon J, Jennings M, Claffey NM. Root canal anatomy of maxillary first and second permanent molars. Int Endod J 2000;33:405-14.

14.

Neelakantan P, Subbarao C, Ahuja R, Subbarao CV, Gutmann JL. Cone-beam computed tomography study of root and canal morphology of maxillary first and second molars in an Indian population. J Endod 2010;36:1622-7.

15.

Kim Y, Lee SJ, Woo J. Morphology of maxillary first and second molars analyzed by cone-beam computed tomography in a korean population: variations in the number of roots and canals and the incidence of fusion. J Endod 2012;38:1063-8.

16.

Jun RW HK. The distribution of C-shaped canal system in Korean population with CT image. Korean J Oral Maxillofac Radiol 2009;39:75-79.

17.

Teixeira FB, Sano CL, Gomes BP, et al. A preliminary in vitro study of the incidence and position of the root canal isthmus in maxillary and mandibular first molars. Int Endod J 2003;36:276-80.

18.

Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod 2004;30:559-67.

19.

Tam A, Yu DC. Location of canal isthmus and accessory canals in the mesiobuccal root of maxillary first permanent molars. J Can Dent Assoc 2002;68:28-33.

20.

Coutinho Filho T, La Cerda RS, Gurgel Filho ED, de Deus GA, Magalhaes KM. The influence of the surgical operating microscope in locating the mesiolingual canal orifice: a laboratory analysis. Braz Oral Res 2006;20:59-63.

21.

Degerness RA, Bowles WR. Dimension, anatomy and morphology of the mesiobuccal root canal system in maxillary molars. J Endod 2010;36:985-9.

22.

Estrela C, Bueno MR, Azevedo BC, Azevedo JR, Pecora JD. A new periapical index based on cone beam computed tomography. J Endod 2008;34:1325-31.

23.

Singh C SV, Arora R. Study of root canals and their configuration in maxillary second permanent molar. Indian J Dent Res 1994;5:3-8.

24.

Alavi AM, Opasanon A, Ng YL, Gulabivala K. Root and canal morphology of Thai maxillary molars. Int Endod J 2002;35:478-85.

25.

Thomas RP, Moule AJ, Bryant R. Root canal morphology of maxillary permanent first molar teeth at various ages. Int Endod J 1993;26:257-67.

26.

Neaverth EJ, Kotler LM, Kaltenbach RF. Clinical investigation (in vivo) of endodontically treated maxillary first molars. J Endod 1987;13:506-12.

27.

Heard F, Walton RE. Scanning electron microscope study comparing four root canal preparation techniques in small curved canals. Int Endod J 1997;30:323-31.

28.

Mizrahi SJ, Tucker JW, Seltzer S. A scanning electron microscopic study of the efficacy of various endodontic instruments. J Endod 1975;1:324-33.

29.

Lloyd A, Jaunberzins A, Dummer PM, Bryant S. Root-end cavity preparation using the MicroMega Sonic Retro-prep Tip. SEM analysis. Int Endod J 1996;29:295-301.

30.

Nair PN, Sjogren U, Krey G, Kahnberg KE, Sundqvist G. Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: a long-term light and electron microscopic follow-up study. J Endod 1990;16:580-8.

31.

Lyra CM, Delai D, Pereira KC, Pereira GM, Pasternak J?nior B, Oliveira CA. Morphology of Mesiobuccal Root Canals of Maxillary First Molars: a comparison of CBCT scanning and Crosssectioning. Braz Dent J. 2015;26:525-9.

logo