Radix entomolaris, an anatomical variation of mandibular molars: clinically relevant considerations

Radix entomolaris, uma variação anatômica em molares inferiores:

Authors

  • Caroline Felipe Magalhães Girelli
  • Carolina Oliveira de Lima
  • Marilia Marceliano-Alves
  • Renato Girelli Coelho
  • Gabriel Pinheiro Lacerda
  • Mariane Floriano Lopes Santos Lacerda

DOI:

https://doi.org/10.34117/bjdv8n11-170

Keywords:

Radix entomolaris, root canal therapy, anatomy

Abstract

Knowledge about both the external and internal anatomy of teeth is essential for the success of endodontic treatment. The mandibular molars are prone to anatomical variations such as the presence of an additional root located lingual to the tooth which is named Radix Entomolaris (RE). The aim of the present study was to describe the internal and external morphology of RE, as well as evaluate the prevalence, etiology, and clinical protocol of this atypical anatomy by means of a literature review. The knowledge of these anatomical variations as well as clinical guidelines for the diagnosis and endodontic treatment of RE can minimize procedural errors during root canal preparation, and provide an adapted clinical approach for the dentists, thus culminating in the success of endodontic treatment.

References

Schilder H. Endodontic therapy. In: Goldman et al. Current Therapy in Dentistry. 1nd ed. St. Louis, The C.V. Mosby Company; 1964. P. 84-102.

de Pablo OV, Estevez R, Péix Sánchez M, Heilborn C, Cohenca N. Root anatomy and canal configuration of the permanent mandibular first molar: a systematic review. J Endod. 2010;36(12):1919-31.

De Moor RJ, Deroose CA, Calberson FL. The radix entomolaris in mandibular first molars: an endodontic challenge. Int Endod J. 2004;37(11):789-99.

Davini F, Cunha RS, Fontana CE, Silveira CFG, Bueno CES. Radix entomolaris- A case report. RSBO. 2012;9(3):340-4.

Sarangi P, Uppin VM. Mandibular first molar with a radix entomolaris: an endodontic dilemma. J Dent (Tehran). 2014;11(1):118-22.

Gu Y, Lu Q, Wang H, Ding Y, Wang P, Ni L. Root canal morphology of permanent three-rooted mandibular first molars-part I: pulp floor and root canal system. J Endod. 2010;36(6):990-4.

Carabelli G. Systematisches Handbuch der Zahnheilkunde 2nd ed. Vienna, Braumuller und Seidel; 1844.

Bolk L. Bemerküngen über Wurzelvariationen am menschlichen unteren Molaren. Zeiting fur Morphologie und Anthropologie. 1915; 17:605–10.

Silva EJNL, Nejaim Y, Silva AV, Haiter-Neto F, Cohenca N. Evaluation of root canal configuration of mandibular molars in a Brazilian population by using cone-beam computed tomography: an in vivo study. J Endod. 2013; 39(7):849-52.

Souza-Flamini LE, Leoni GB, Mazzi Chaves JF, Versiani MA, Cruz-Filho AM, Pecora JD, et al. The radix entomolaris and paramolaris: a micro-computed tomographic study of 3 rooted mandibular first molars. J Endod 2014;40(10):1616-21.

Tratman EK. Three-rooted lower molars in man and their racial distribution. Br Dent J. 1938;64:264-74.

Walker T, Quakenbush LE. Three rooted lower first permanent molars in Hong Kong Chinese. Br Dent J. 1985;159:298-9.

Sperber GH, Moreau JL. Study of the number of roots and canals in Senegalese first permanent mandibular molars. Int Endod J. 1998;31(2):112-6.

Abella F, Patel S, Duran-Sindreu F, Mercade M, Roig M. Mandibular first molars with disto-lingual roots: Review and clinical management. Int Endod J . 2012;45(11):963-78.

Carlsen O, Alexandersen V. Radix entomolaris: identification and morphology. Scan J Dent Res. 1990;98(5):363-373.

Abrami S. The Radix Entomolaris: management of the distolingual root canal. G Ital Endod. 2016; 30(2):120-123.

Song JS, Choi HJ, Jung IY, Jung HS, Kim SO. The prevalence and morphologic classification of distolingual roots in the mandibular molars in a Korean population. J Endod. 2010;36(4): 653–657.

Vivekananda Pai AR, Jain R, Colaco AS. Detection and endodontic management of radix entomolaris: Report of case series. Saudi Endod J. 2014;4(2):77-82.

Vertucci F. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984;58(5):589-599.

Sinha DJ, Mahesh S, Jaiswal N, Vasudeva A. Radix entomolaris: A report of two cases. Bull. Tokyo Dent Coll. 2016;57(4):253-258.

Tu MG, Huang HL, Hsue SS, Hsu JT, Chen SY, Jou MJ, et al. Detection of permanent three-rooted mandibular first molar by cone-beam computed tomography imaging in Taiwanese individuals. J Endod. 2009;35(4):503-7.

Abella F, Mercadé M, Duran-Sindreu F, Roig M. Managing severe curvature of radix entomolaris: three- dimensional analysis with cone beam computed tomography. Int Endod J. 2011;44(9):876-85.

Calberson FL, De Moor RJ, Deroose CA. The radix entomolaris and paramolaris: Clinical approach in endodontics. J Endod. 2007;33(1):58-63.

Skidmore AE, Bjorndal AM. Root canal morphology of the human mandibular first molar. Oral Surg Oral Med Oral Pathol. 1971;32(5):778–84.

Ferraz JA, Pecora JD. Three-rooted mandibular molars in patients of Mongolian, Caucasian and Negro origin. Braz Dent J. 1993;3(2):113–7.

Ribeiro FC, Consolaro A. Importancia clinica y antropologica de la raiz distolingual en los molars inferiores permanentes. Endodoncia. 1997;15:72-8.

Bolk L. The importance of endodontic in maxillary and mandibular molar canals. J Can Dent Assoc. 1994;60:527-532.

Yew SC, Chan K. A retrospective study of endodontically treated mandibular first molars in a Chinese population. J Endod. 1993;19(9):471–3.

Curzon MEJ. Three-rooted mandibular permanent molars in English Caucasians. J Dent Res 1973;52(1):181.

Somogyl-Csizmazia W, Simons AJ. Three-rooted mandibular first molars in Alberta Indian Children. J Can Dent Assoc. 1971;37(3):105-6.

Chen YC, Lee YY, Pai SF, Yang SF. The morphologic characteristics of the distolingual roots of mandibular first molars in a Taiwanese population. J Endod. 2009;35(5):643-645.

Moulshree D, Tivedi P, Pandya M, Kumari M. Incidence of radix entomolaris in the indian population - An In-vitro and In-vivo Analysis: J Int Oral Health. 2011;3(5):35-45.

Bharti R, Ayra D, Saumyendra VS, Kulwinder KW, Tikku AP, Chandra A. Prevalence of radix entomolaris in an Indian population. Indian J Stomatol. 2011;2(3):165-67.

Kruse C, Spin-Neto R, Reibel J, Wenzel A, Kirkevang LL. Diagnostic validity of periapical radiography and CBCT for assessing periapical lesions that persist after endodontic surgery. Dentomaxillofac Radiol. 2017;46(7):20170210.

Estrela C, Leles CR, Hollanda ACB, Moura MS, Pécora JD. Prevalence and risk factors of apical periodontitis in endodontically treated teeth in a selected population of brazilian adults. Braz Dent J. 2008;19(1):34-9.

Jaju PP, Jaju SP. Cone-beam computed tomography: Time to move from ALARA to ALADA. Imaging Sci Dent. 2015;45(4): 263-5.

Agarwal M, Trivedi HP, Mathur M, Goel D, Mittal S. The radix entomolaris and radix paramolaris: an endodontic challenge. J Contemp Dent Pract. 2014;15(4):496-9.

Krasner P, Rankow HJ. Anatomy of the pulp-chamber floor. J Endod. 2004;30(1):5-16.

Agora A, Area A, Chauhan L, Thapak G. Radix entomolaris: case report withclinical implication. Int J Clin Pediatr Dent. 2018;11(6):536-538.

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Published

2022-11-14

How to Cite

Girelli, C. F. M., de Lima, C. O., Marceliano-Alves, M., Coelho, R. G., Lacerda, G. P., & Lacerda, M. F. L. S. (2022). Radix entomolaris, an anatomical variation of mandibular molars: clinically relevant considerations: Radix entomolaris, uma variação anatômica em molares inferiores:. Brazilian Journal of Development, 8(11), 73346–73357. https://doi.org/10.34117/bjdv8n11-170

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Section

Original Papers