head JofIMAB
Journal of IMAB
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2024, vol. 30, issue3
Subject Area: Dental Medicine
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DOI: 10.5272/jimab.2024303.5645
Published online: 16 July 2024

Case report
J of IMAB. 2024 Jul-Sep;30(3):5645-5647
RARE ANATOMIC VARIATIONS: AGENESIS OF LEFT MENTAL FORAMEN COEXISTING WITH TWO RIGHT MENTAL FORAMINA
Dimitar Yovchev1ORCID logoCorresponding Autoremail, Hristina Mihaylova1ORCID logo, Janet Kirilova2ORCID logo, Elitsa Deliverska3ORCID logo,
1) Department of Imaging and Oral Diagnostics, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria.
2) Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria.
3) Department of Dental, Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria.

ABSTRACT:
Knowledge about the proximity of important anatomical structures is crucial for all surgical interventions, including those in the lower jaw region.
One of these important structures is the mental foramen, which transmits the mental nerve, whose branches provide sensory innervation to the chin, lower lip, and gingiva.
The mental foramen variations can influence the effectiveness of the mental nerve anesthesia and can also be related to complications during surgical procedures such as implant placement, apicoectomy, vestibuloplasty, etc.
We present a very rare case of agenesis of left mental foramen coexisting with two right mental foramina incidentally found in a patient examined by cone-beam computed tomography.

Keywords: Mental foramen, Accessory mental foramen, Agenesis, Cone-beam computed tomography, Mandible, Surgery,

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Please cite this article as: Yovchev D, Mihaylova H, Kirilova J, Deliverska E. Rare Anatomic Variations: Agenesis of Left Mental Foramen Coexisting with Two Right Mental Foramina. J of IMAB. 2024 Jul-Sep;30(3):5645-5647. [Crossref - 10.5272/jimab.2024303.5645]

Corresponding AutorCorrespondence to: Dimitar Yovchev, Department of Imaging and Oral Diagnostics, Faculty of Dental Medicine, Medical University, Sofia; 1, Sveti Georgi Sofiyski Str., 1431 Sofia, Bulgaria; E-mail: dimitarryovchev@gmail.com

REFERENCES:
1. da Silva Ramos Fernandes LM, Capelozza AL, Rubira-Bullen IR. Absence and hypoplasia of the mental foramen detected in CBCT images: a case report. Surg Radiol Anat. 2011 Oct;33(8):731-4. [PubMed]
2.Borghesi A, Pezzotti S, Nocivelli G, Maroldi R. Five mental foramina in the same mandible: CBCT findings of an unusual anatomical variant. Surg Radiol Anat. 2018 Jun;40(6):635-640. [PubMed]
3.Bosykh YY, Turkina AY, Franco RPAV, Franco A, Makeeva MK. Cone beam computed tomography study on the relation between mental foramen and roots of mandibular teeth, presence of anterior loop and satellite foramina. Morphologie. 2019 Jun;103(341 Pt 2):65-71. [PubMed]
4.Lauhr G, Coutant JC, Normand E, Laurenjoye M, Ella B. Bilateral absence of mental foramen in a living human subject. Surg Radiol Anat. 2015 May;37(4):403-5. [PubMed]
5.Pelé A, Berry PA, Evanno C, Jordana F. Evaluation of Mental Foramen with Cone Beam Computed Tomography: A Systematic Review of Literature. Radiol Res Pract. 2021 Jan 6;2021:8897275. [PubMed]
6.Rath R, Sangamesh NC, Bajoria AA, Pani SR. Cone - Beam Computed Tomography Study of Morphologic and Morphometric Characteristics of Mental Foramen in an Eastern Indian Population. Forensic Imaging. 2023 Jun;33:200538. [Crossref]
7.Yovchev D. Quadruple mental foramina detected by CBCT: a case report. Eurorad. 2014 Feb 8;11444. [Crossref]
8.Gershenson A, Nathan H, Luchansky E. Mental foramen and mental nerve: changes with age. Acta Anat (Basel). 1986; 126(1):21-8. [PubMed]
9. Sing Parihar AP, Singar S, Gehi S, Saxena  A, Jain  A. Unilateral agenesis of the mental foramen. J Indian Acad Oral Med Radiol. 2020 Oct-Dec;32(4):396-398. [Crossref]
10. Azaz B, Lustmann J. Anatomical configurations in dry mandibles. Br J Oral Surg. 1973 Jul;11(1):1-9. [PubMed ]
11. de Freitas V, Madeira MC, Toledo Filho JL, Chagas CF. Absence of the mental foramen in dry human mandibles. Acta Anat (Basel). 1979; 104(3):353-5. [PubMed]
12. Hasan T, Fauzi M, Hasan D. Bilateral absence of the mental foramen: A rare variation. Int J Anat Var. 2010;3:167-9.
13. Hasan T. Bilateral caroticoclinoid and absent mental foramen: rare variations of cranial base and lower jaw. Ital J Anat Embryol. 2013;118(3):288-97. [PubMed]
14. Matsumoto K, Araki M, Honda K. Bilateral absence of the mental foramen detected by cone-beam computed tomography. Oral Radiol. 2013; 29:198-201. [Crossref]
15. Oliveira-Santos C, Souza PH, De Azambuja Berti-Couto S, Stinkens L, Moyaert K, Van Assche N, et al. Characterisation of additional mental foramina through cone beam computed tomography. J Oral Rehabil. 2011 Aug;38(8):595-600. [PubMed]
16. Ulu M, Tarim Ertas E, Gunhan F, Yircali Atici M, Akcay H. Unilateral Absence of Mental Foramen with Surgical Exploration in a Living Human Subject. Case Rep Dent. 2016; 2016:1971925. [PubMed]
17. Yovchev D, Mihaylova Hr, Dimitrov Y, Deliverska E, Miteva-Yovcheva N. Unilateral absence of mental foramen. Biomed Res. 2018 Nov 26;29(21):3797-3800. [Crossref]
18. Robinson C, Yoakum CB. Variation in accessory mental foramen frequency and number in extant hominoids. Anat Rec (Hoboken). 2020 Dec;303(12):3000-3013. [PubMed]

Received: 15 March 2024
Published online: 16 July 2024

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