Incidence of large accessory mandibular foramen in human mandibles

• Autores: N. Prashanthi, K. Narayana
• Localización: European Journal of anatomy, ISSN-e 1136-4890, Vol. 7, Nº. 3, 2003, págs. 139-141
• Idioma: inglés
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• Resumen

  • The mandibular foramen (MF) is present on the inner surface of the ramus of the mandible. The inferior neurovascular bundle passes through it. A large accessory mandibular foramen (AMF) was present postero-superior to the normal MF (left side) in 1 mandible out of 335 (0.3%) mandibles observed. The diameters of this foramen were 10 mm antero-posteriorly and 5 mm vertically, and that of MF were 7 mm antero-posteriorly and 5 mm vertically. The distance between these 2 foramina was 11 mm, and between the AMF and the apex of the lingula was 4 mm. The distances from the posterior limit of AMF to the posterior border of the ramus and angle were 18 mm and 52 mm, respectively. The AMF led into a canal that passed obliquely forwards and lateral to the mandibular canal and joined the latter at the level of the 3rd molar. A large AMF is a rare occurrence and therefore one should be aware of its incidence, since the structure/ s passing through it could be compromised during surgical procedures of this area.