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Asymmetry in mesial root number and morphology in mandibular second molars: a case report

  • Nayak, Gurudutt (Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital) ;
  • Shetty, Shashit (Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital) ;
  • Shekhar, Rhitu (Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital)
  • Received : 2013.08.14
  • Accepted : 2013.09.26
  • Published : 2014.02.28

Abstract

Ambiguity in the root morphology of the mandibular second molars is quite common. The most common root canal configuration is 2 roots and 3 canals, nonetheless other possibilities may still exist. The presence of accessory roots is an interesting example of anatomic root variation. While the presence of radix entomolaris or radix paramolaris is regarded as a typical clinical finding of a three-rooted mandibular second permanent molar, the occurrence of an additional mesial root is rather uncommon and represents a possibility of deviation from the regular norms. This case report describes successful endodontic management of a three-rooted mandibular second molar presenting with an unusual accessory mesial root, which was identified with the aid of multiangled radiographs and cone-beam computed tomography imaging. This article also discusses the prevalence, etiology, morphological variations, clinical approach to diagnosis, and significance of supernumerary roots in contemporary clinical dentistry.

Keywords

References

  1. Ingle JI, Backland LK, Baumgarthner JC. Endodontics, 6th ed. Hamilton: BC Decker Inc.; 2008. Cleghorn BM, Goodacre CJ, Christie WH. Morphology of teeth and their root canal system. p151-220.
  2. Visser JB. Beitrag zur Kenntnis der menschlichen Zahnwurzelformen. Hilversum: Rotting; 1948. p49-72.
  3. Ferraz JA, Pécora JD. Three-rooted mandibular molars in patients of Mongolian, Caucasian and Negro origin. Braz Dent J 1993;3:113-117.
  4. Slowey RR. Root canal anatomy. Road map to successful endodontics. Dent Clin North Am 1979;23:555-573.
  5. Sert S, Bayrl G. Taurodontism in six molars: a case report. J Endod 2004;30:601-602. https://doi.org/10.1097/01.DON.0000121609.74336.24
  6. Fava LR, Weinfeld I, Fabri FP, Pais CR. Four second molars with single roots and single canals in the same patient. Int Endod J 2000;33:138-142. https://doi.org/10.1046/j.1365-2591.2000.00272.x
  7. Bond JL, Hartwell GR, Donnelly JC, Portell FR. Clinical management of middle mesial root canals in mandibular molars. J Endod 1988;14:312-314. https://doi.org/10.1016/S0099-2399(88)80033-5
  8. Kannan SK, Suganya, Santharam H. Supernumerary roots. Indian J Dent Res 2002;13:116-119.
  9. Peiris R, Pitakotuwage N, Takahashi M, Ohzeki S, Nakayama M, Sakurai S, Igarashi Y, Matsuno M, Sasaki K, Satake T, Kanazawa E. Mandibular permanent second molar with four roots and root canals: a case report. Odontology 2009;97:51-53. https://doi.org/10.1007/s10266-008-0091-2
  10. Ravanshad S, Nabavizade MR. Endodontic treatment of a mandibular second molar with two mesial roots: report of a case. Iran Endod J 2008;3:137-140.
  11. Ahmed HMA, Luddin N. Accessory mesial roots and root canals in mandibular molar teeth: case reports, SEM analysis and literature review. Endod Pract Today 2012;6:195-205.
  12. Neville BW, Damm DD, Allen CM, Bouquot JE, eds. Oral & Maxillofacial Pathology, 2nd ed. philadelphia: Saunders; 2002. Neville BW, Damm DD, Allen CM, Bouquot JE. Abnormalities of teeth. p88.
  13. Baert AL. Encyclopedia of diagnostic imaging. Volume 1. Seoul: Springer; 2008. p427.
  14. Alt KW, Rösing FW, Teschler-Nicola M. Dental Anthropology. Fundamentals, Limits and Prospects, Austria: Springer; 1998. Türp JC, Alt KW. Chapter 3.1. Anatomy and morphology of human teeth. p71-94.
  15. Midtbø M, Halse A. Root length, crown height, and root morphology in Turner syndrome. Acta Odontol Scand 1994;52:303-314. https://doi.org/10.3109/00016359409029043
  16. de Souza-Freitas JA, Lopes ES, Casati-Alvares L. Anatomic variations of lower first permanent molar roots in two ethnic groups. Oral Surg Oral Med Oral Pathol 1971;31:274-278. https://doi.org/10.1016/0030-4220(71)90083-1
  17. Onda S, Minemura R, Masaki T, Funatsu S. Shape and number of the roots of the permanent molar teeth. Bull Tokyo Dent Coll 1989;30:221-231.
  18. Calberson FL, De Moor RJ, Deroose CA. The radix entomolaris and paramolaris: clinical approach in endodontics. J Endod 2007;33:58-63. https://doi.org/10.1016/j.joen.2006.05.007
  19. Jerome CE, Hanlon RJ Jr. Dental anatomical anomalies in Asians and Pacific Islanders. J Calif Dent Assoc 2007;35:631-636.
  20. Huang RY, Lin CD, Lee MS, Yeh CL, Shen EC, Chiang CY, Chiu HC, Fu E. Mandibular disto-lingual root: a consideration in periodontal therapy. J Periodontol 2007;78:1485-1490. Nayak G et al. https://doi.org/10.1902/jop.2007.060419