Morphometric study of the mental foramen correlating with sex / Estudo morfométrico do forame mentual correlacionando com o sexo

José Aderval Aragão, Felipe Matheus Sant’Anna Aragão, Iapunira Catarina Sant’Anna Aragão, Yasmin Machado Cunha Oliveira Aragão, João Victor Rocha de Almeida, Caio Siqueira Kuhn, Ianique Rocha dos Santos, Francisco Prado Reis


Introduction: The mental foramen (MF) is located in the anterolateral region of the mandible body and through it passes the mental nerve and vessels. Its precise location is important in dental and anesthetic surgical procedures to avoid damage to the neurovascular structures that pass through it. However, due to the presence of variations in the incidence, shape, position and multiplicity of this foramen, controversies arise among authors regarding its exact location. Our study aimed to study the morphometric variations of the mental foramen correlating with sex. Materials and methods: A total of 252 human dry mandibles present in the Laboratory of Anatomy of the Department of Morphology of the Federal University of Sergipe were analyzed. The distance from the MF to the mental protuberance (MF-MP), the vertical distance from the MF to the inferior margin of the mandible (MF-IMM), the distance from the MF to the margin of the inferior alveolar process (MF-IAP), the width and the height of the MF and the multiplicity of the MF, as well as its position in relation to the lower molars and premolars. Results: The height of the MF showed no significant difference between genders on the right side (p=0.137), the same occurring on the left side (p=0.030). The width was similar in males and females on the right (p=0.241) and left (p=0.269).  The most common position found for MF was in line with the second premolar, with no significant difference being found on the right (p=0.265) and left (p=0.435) sides. Sixty (11.9%) accessory mental foramens (AMF) were verified and there was no association between the occurrence of AMF and gender on the right (p=0.786) and left (p=0.748) sides. Male mandibles showed higher values of MF-IMM and MF-IAP than females on both sides. The MF-MP values were similar between the two sexes on the right and left sides. Conclusion: It is concluded that there was no correlation between the morphometric variables of MF and gender.


mental foramen, morphometry, anatomy, sex.

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Apinhasmit W, Methathrathip D, Chompoopong S, Sangvichien S. Mental foramen in Thais: an anatomical variation related to gender and side. Surg Radiol Anat. 2006 Oct;28(5):529-33.

Balcioglu HA, Kocaelli H. Accessory mental foramen. N Am J Med Sci. 2009 Nov;1(6):314-5.

Haghanifar S, Rokouei M. Radiographic evaluation of the mental foramen in a selected Iranian population. Indian J Dent Res. 2009 Apr-Jun;20(2):150-2.

Naitoh M, Yoshida K, Nakahara K, Gotoh K, Ariji E. Demonstration of the accessory mental foramen using rotational panoramic radiography compared with cone-beam computed tomography. Clin Oral Implants Res. 2011 Dec;22(12):1415-9.

Imada TS, Fernandes LM, Centurion BS, de Oliveira-Santos C, Honório HM, Rubira-Bullen IR. Accessory mental foramina: prevalence, position and diameter assessed by cone-beam computed tomography and digital panoramic radiographs. Clin Oral Implants Res. 2014 Feb;25(2):e94-9.

Sankar DK, Bhanu SP, Susan PJ. Morphometrical and morphological study of mental foramen in dry dentulous mandibles of South Andhra population of India. Indian J Dent Res. 2011 Jul-Aug;22(4):542-6.

Roy PP, Ambali MP, Doshi MA, Jadhav SD. Variation in the position shape and direction of mental foramen in dry mandible. Int J Anat Res 2014 Jun;2(2):418-20.

Neves FS, Torres MG, Oliveira C, Campos PS, Crusoé-Rebello I. Lingual accessory mental foramen: a report of an extremely rare anatomical variation. J Oral Sci. 2010 Sep;52(3):501-3.

Budhiraja V, Rastogi R, Lalwani R, Goel P, Bose SC. Study of position, shape, and size of mental foramen utilizing various parameters in dry adult human mandibles from north India. ISRN Anat. 2012 Dec 17;2013:961429.

Siddiqui AU, Daimi SR, Mishra PP, Doshi SS, Date JY, Khurana G. Morphological and morphometric analysis of mental foramen utilizing various assessment parameters in dry human mandibles. Int J Stud Res. 2011 Jan-Mar;1(1):19-22.

Sekerci AE, Sahman H, Sisman Y, Aksu Y. Morphometric analysis of the mental foramen in a Turkish population based on multi-slice computed tomography. J Oral Maxillofac Radiol. 2013 Jan;1(1):2-7.

Kalender A, Orhan K, Aksoy U. Evaluation of the mental foramen and accessory mental foramen in Turkish patients using cone-beam computed tomography images reconstructed from a volumetric rendering program. Clin Anat. 2012 Jul;25(5):584-92.

Gada SK, Nagda SJ. Assessment of position and bilateral symmetry of occurrence of mental foramen in dentate asian population. J Clin Diagn Res. 2014 Feb;8(2):203-5.

Vadgama JD, Chaudhari SM, Patel SV, Rathod SP, Patel SM, Zalawadia AZ, Shah SB, Pandya PM, Shah MA. Morphometric study of mental foramina in dentate and edentulous human mandible in Gujarat Region. National Journal of Integrated Research in Medicine (NJIRM). 2012 Jul-Aug;3(3):47-51.

Juodzbalys G, Wang HL, Sabalys G. Anatomy of Mandibular Vital Structures. Part II: Mandibular Incisive Canal, Mental Foramen and Associated Neurovascular Bundles in Relation with Dental Implantology. J Oral Maxillofac Res. 2010 Apr 1;1(1):e3.

Rai R, Shrestha S, Sudha Jha S. Mental foramen: a morphological and morphometrical study. International Journal of Healthcare & Biomedical Research (IJHBR). 2014 Jul;2(4):144-50.

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.

Mendonça Amorim M, Prado FB, Borini CB, Bittar TO, Volpato MC, Groppo FC, Caria PHF. The Mental Foramen Position in Dentate and Edentulous Brazilian’s Mandible. Int J Morphol. 2008 Sep;26(4):981-987.

Oliveira Junior EM, Araújo ALD, Da Silva CMF, Sousa-Rodrigues CF, Lima FJC. Morphological and morphometric study of the mental foramen on the M-CP-18 Jiachenjiang Point. Int J Morphol. 2009 Oct;27(1):231-238.



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