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VOLUME 10 , ISSUE 4 ( July-August, 2019 ) > List of Articles


Analysis of Root Canal Anatomy and Variation in Morphology of Maxillary First Molar Using Various Methods: An In Vitro Study

Youssef A Algarni

Keywords : Cone-beam computed tomography, Dental operating microscope, Maxillary first molar, MB2 canal

Citation Information : Algarni YA. Analysis of Root Canal Anatomy and Variation in Morphology of Maxillary First Molar Using Various Methods: An In Vitro Study. World J Dent 2019; 10 (4):291-294.

DOI: 10.5005/jp-journals-10015-1644

License: CC BY-NC 4.0

Published Online: 01-08-2019

Copyright Statement:  Copyright © 2019; Jaypee Brothers Medical Publishers (P) Ltd.


Aim: To assess and compare the internal morphology of the maxillary first molar and the incidence of the fourth root canal, especially mesiobuccal (MB2) using three diagnostic methods, clinically with or without dental operating microscopy (DOM) and cone-beam computed tomography (CBCT). Materials and methods: A total of 336 maxillary first molar teeth were examined and distributed into the following groups: group I (n = 112), the teeth were treated by dental interns without any means of magnification. Group II (n = 112), the teeth were treated by an endodontist with the use of the a dental operating microscope (DOM). Group III (n = 112), the CBCT images were selected and examined carefully. Results: The second mesiobuccal root canal within the maxillary first molar was present in groups I, II and III with the incidence of 27%, 46% and 60%, respectively. Conclusion: Within the limitations of this study, it can be concluded that the maxillary first molar teeth showed significant variations of their root canals. CBCT and dental operating microscope significantly facilitated the location and identification of the second root canal of the mesiobuccal root of maxillary first molar. Clinical significance: Knowledge of root canal anatomy is an important factor for a successful endodontic outcome.

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  1. Ashraf H, Paymanpour P, et al. Healing of an extensive periradicular lesion subsequent to a proper endodontic treatment of a mandibular first premolar with complex anatomy. Case Rep Dent 2013;2013:972093. DOI: 10.1155/2013/972093.
  2. Chang S, Lee J, et al. In-depth morphological study of mesiobuccal root canal systems in maxillary first molars: Review. Restor Dent Endod 2013;38(1):2–10. DOI: 10.5395/rde.2013.38.1.2.
  3. Weine FS, Healey HJ, et al. Canal configuration in the mesiobuccal root of the maxillary first molar and its endodontic significance. Oral Surg Oral Med Oral Pathol 1969;28:419. DOI: 10.1016/0030-4220(69) 90237-0.
  4. Vertucci FJ. Root canal morphology and its relationship to endodontic procedures. Endod Top 2005;10:3–29. DOI: 10.1111/j.1601-1546.2005.00129.x.
  5. Neelakantan P, Subbarao C, et al. Comparative evaluation of modified canal staining and clearing technique, cone-beam computed tomography, peripheral quantitative computed tomography, spiral computed tomography, and plain and contrast medium–enhanced digital radiography in studying root canal morphology. J Endod 2010;36:1547–1551. DOI: 10.1016/j.joen.2010.05.008.
  6. Silva EJ, Nejaim Y, et al. Evaluation of root canal configuration of maxillary molars in a Brazilian population using cone-beam computed tomographic imaging: an in vivo study. J Endod 2014;40(2):173–176. DOI: 10.1016/j.joen.2013.10.002.
  7. Chen GYH, Tong C. Investigation of the root canal configuration of mandibular first molars in a Taiwan Chinese population. Int Endod J 2009;42(11):1044–1049. DOI: 10.1111/j.1365-2591.2009.01619.x.
  8. Weng XL, Yu SB, et al. Root canal morphology of permanent maxillary teeth in the Han nationality in the Chinese Guanzhong area: a new modified root canal staining technique. J Endod 2009;35:651–656. DOI: 10.1016/j.joen.2009.02.010.
  9. Hosseinpour S, Kharazifard MJ, et al. Root Canal Morphology of Permanent Mandibular Premolars in Iranian Population: A Systematic Review. Iran Endod J 2016;11(3):150–156.
  10. Pecora JD, Woelfel JB, et al. Morphologic study of the maxillary molars. Part II: internal anatomy. Braz Dent J 1992;3:53–57.
  11. Sert S, Bayirli GS. Evaluation of the root canal configurations of the mandibular and maxillary permanent teeth by gender in the Turkish population. J Endod 2004;30:391–398. DOI: 10.1097/00004770-200406000-00004.
  12. Cleghorn BM, Christie WH, et al. Root and root canal morphology of the human permanent maxillary first molar: a literature review. J Endod 2006;32:813–821. DOI: 10.1016/j.joen.2006.04.014.
  13. Gahleitner A, Watzek G, et al. Dental CT: imaging technique, anatomy and pathologic conditions of the jaws. Eur Radiol 2003;13:366–376.
  14. Kiarudi AH, Eghbal MJ, et al. The applications of cone-beam computed tomography in endodontics: a review of literature. Iran Endod J 2015;10(1):16–25.
  15. Ng YL, Aung TH, et al. Root and canal morphology of Burmese maxillary molars. Int Endod J 2001;34:620–630. DOI: 10.1046/j.1365-2591.2001.00438.x.
  16. Pattanshetti N, Gaidhane M, et al. 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;41:755–762. DOI: 10.1111/j.1365-2591.2008.01427.x.
  17. Zheng QH, Wang Y, et al. A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population. J Endod 2010;36:1480–1484. DOI: 10.1016/j.joen.2010.06.018.
  18. Neelakantan P, Subbarao C, et al. Cone-beam computed tomography study of root and canal morphology of maxillary first and second molars in an Indian population. J Endod 2010;36:1622–1627. DOI: 10.1016/j.joen.2010.07.006.
  19. Kim Y, Lee SJ, et al. 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;38:1063–1068. DOI: 10.1016/j.joen.2012.04.025.
  20. Rouhani A, Bagherpour A, et al. Cone-beam computed tomography evaluation of maxillary first and second molars in Iranian population: a morphological study. Iran Endod J 2014;9:190–194.
  21. Baratto Filho F, Zaitter S, et al. Analysis of the internal anatomy of maxillary first molars by using different methods. J Endod 2009;35:337–342. DOI: 10.1016/j.joen.2008.11.022.
  22. World Medical Association. World Medical Association Declaration of Helsinki: ethical principles for medical research involving human subjects. JAMA 2013 Nov 27;310(20):2191–2194. DOI: 10.1001/jama.2013.281053.
  23. Lee J-H. Mesiobuccal root canal anatomy of Korean maxillary first and second molars by cone-beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011;111:785–791. DOI: 10.1016/j.tripleo.2010.11.026.
  24. Abuabara A. Identification of root canals in maxillary molars using cone beam computed tomography. Rev Sul-Bras Odontol 2010;7(1):117–120.
  25. Nosonowitz DM, Brenner MR. The major canals of the mesiobuccal root of the maxillary 1st and 2nd molars. NY J Dent 2003;43:12–50.
  26. Neaverth EJ, Kotler LM, et al. Clinical investigation (in vivo) of endodontically treated maxillary first molars. J Endod 1997;13: 506–512. DOI: 10.1016/S0099-2399(87)80018-3.
  27. Stropko JJ. Canal morphology of maxillary molars: clinical observations of canal configurations. J Endod 1999;25:446–450. DOI: 10.1016/S0099-2399(99)80276-3.
  28. Peeter HH, Suardita K, et al. Prevalence of a second canal in the mesiobuccal root of permanent maxillary first molars from an Indonesian population. J Oral Sci 2011;53:489–494. DOI: 10.2334/josnusd.53.489.
  29. Shenoi R. Endodontic applications of cone beam volumetric tomography. J Endod 2012;33:1121–1132.
  30. Bauman R, Scheetz J. Ex vivo detection of mesiobuccal canals in maxillary molars using CBCT at four different isotropic voxel dimensions. Int Endod J 2011;44:752–758. DOI: 10.1111/j.1365-2591.2011.01882.x. World Journal of Dentistry (2019): 10.5005/jp-journals-10015-1643
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