Authors : Dr. Madhura Nagare; Dr. Meetu Mathur; Dr. Pratishtha Singh

Volume/Issue : Volume 11 - 2026, Issue 7 - July

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Google Scholar : https://tinyurl.com/6238p7bh

Scribd : https://tinyurl.com/5av6cxsp

DOI : https://doi.org/10.38124/ijisrt/26jul139

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Abstract : Radix entomolaris (RE) is a rare anatomical variation characterized by the presence of an additional distolingual root in mandibular molars. Failure to identify such root morphology may lead to missed canals and endodontic treatment failure. Bilateral occurrence of radix entomolaris in mandibular first molars is uncommon and poses a significant diagnostic and therapeutic challenge for clinicians. This case reprt highlights the importance of thorough radiographic assessment and a comprehensive understanding of root canal anatomy for the successful management of mandibular first molars exhibiting radix entomolaris.

Keywords : Radix Entomolaris; Mandibular First Molar; Anatomical Variation; Extra Root; Root Canal Treatment; Bilateral Occurrence.

References :

1. Carabelli, Georg, Systematisches Handbuch der       Zahnheilkunde. Vienna: Braumüller und Seidel; 1844.
2. Carlsen O, Alexandersen V. Radix entomolaris: identification and morphology. Eur J Oral Sci. 1990;363–373.
3. De Moor RJG, Deroose CA, Calberson FL. The radix entomolaris in mandibular first molars: an endodontic challenge. Int Endod J. 2004;789–799.
4. Calberson FL, De Moor RJG, Deroose CA. The radix entomolaris and paramolaris: clinical approach in endodontics. J Endod. 2007;58–63.
5. Ribeiro FC, Consolaro A. Importância clínica e antropológica da raiz distolingual nos molares inferiores permanentes. Rev Odontol Univ São Paulo. 1997;229–234.
6. Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984;:589–599.
7. Vertucci FJ. Root canal morphology and its relationship to endodontic procedures. Endod Topics. 2005;3–29.
8. Cleghorn BM, Christie WH, Dong CCS. Root and root canal morphology of the human permanent mandibular first molar: a literature review. J Endod. 2007;509–516.
9. Patel S, Durack C, Abella F, et al. European Society of Endodontology position statement: the use of CBCT in endodontics. Int Endod J. 2019;1675–1678.
10. Patel S, Dawood A, Ford TP, Whaites E. The potential applications of cone beam computed tomography in the management of endodontic problems. Int Endod J. 2007;818–830.
11. Cotton TP, Geisler TM, Holden DT, et al. Endodontic applications of cone-beam volumetric tomography. J Endod. 2007;1121–1132.
12. Tu MG, Huang HL, Hsue SS, et al. Detection of permanent three-rooted mandibular first molars by cone-beam computed tomography imaging in Taiwanese individuals. J Endod. 2009;503–507.
13. Abella F, Patel S, Durack C, et al. Cone beam computed tomography in endodontics: a review. Int Endod J. 2015;3–15.
14. Krasner P, Rankow HJ. Anatomy of the pulp-chamber floor. J Endod. 2004;5–16.
15. Cohens, Pathways of the Pulp. 11^th  ed. St. Louis: Elsevier; 2016.
16. Ingle's  Endodontics 7^th edition, Raleigh: PMPH USA; 2019.
17. Štamfelj I et al. Evaluation of radix entomolaris in mandibular first and second molars using cone-beam computed tomography and a review of the literature. Oral Radiology. 2021;648–656.
18. Michelotto ALC et al. Radix entomolaris in mandibular first molars: report of three cases. Research, Society and Development. 2021.
19. Gökdeniz ST et al. The prevalence of radix paramolaris and entomolaris in mandibular molar teeth: a retrospective CBCT study. European Annals of Dental Sciences. 2022;1–7.
20. Štamfelj I, Hitij T, Strmšek L. Radix entomolaris and radix paramolaris: a cone-beam computed tomography study of permanent mandibular molars in a large Slovenian sample. Archives of Oral Biology. 2024;157:105842.
21. Kaur J, Prasath DN, Khurana NS. Prevalence and anatomy of radix entomolaris and paramolaris in mandibular molars: a CBCT study in North-West India. Bioinformation. 2025;3780–3783.