• Surg Radiol Anat · Jun 2018

    Case Reports

    Five mental foramina in the same mandible: CBCT findings of an unusual anatomical variant.

    • Andrea Borghesi, Stefania Pezzotti, Giorgio Nocivelli, and Roberto Maroldi.
    • Department of Radiology, Medical School, University of Brescia, Piazzale Spedali Civili, 1, 25123, Brescia, Italy. andrea.borghesi@unibs.it.
    • Surg Radiol Anat. 2018 Jun 1; 40 (6): 635-640.

    AbstractThe mental foramen is an important anatomic landmark located on the buccal aspect of the mandible, typically near the apex of the second premolar. Mental foramina exhibit many anatomical variations, including differences in size, shape, position, and number. The most frequent type of variation in number is the presence of double mental foramen, which has a reported incidence ranging from 1.4 to 12.5%. The incidence of triple mental foramen ranges from 0.7 to 1.2%. The frequency of accessory mental foramina varies among ethnic groups, with a low incidence in white Caucasian populations. At present, cone beam computed tomography (CBCT) is the diagnostic tool of choice for examining the maxillofacial region, and the high spatial resolution of CBCT allows accurate three-dimensional analysis of mental foramen variations. The present report describes an unusual case of five mental foramina in a 24-year-old white European male diagnosed by CBCT.

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