Prevalence of Accessory Mental Foramina: A Study of 4,000 CBCT Scans

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Abstract

The presence of accessory mental foramina (AMF) is an important consideration prior to any dental implant and surgical treatment to avoid injury to the neurovascular bundle and subsequent postoperative complications. The aim of this retrospective study was to determine the prevalence of AMF from a substantially large sample of the Australian population. The cone beam computed tomography (CBCT) scans of 4,000 patients showing the mandible were examined. All mental foramen (MF) were visualized and no cases were excluded. The number of MF/AMF, sex, and age were recorded. The prevalence of AMF was found to be 6.4% (254 patients) in this study. Twelve patients exhibited bilateral AMF, and 11 had three mental foramina on one side. One case had a total of five mental foramina with three on the right and two on the left side. No significant sex preference was discovered. This is the largest study ever to be conducted to evaluate the prevalence of AMF. With nearly one in 15 individuals found to have AMF, clinicians must be acutely aware of this anatomical variation and treatment plan for each case accordingly. Clin. Anat., 2019. (c) 2019 Wiley Periodicals, Inc.

Original languageEnglish
Pages (from-to)1048-1052
Number of pages5
JournalClinical Anatomy
Volume32
Issue number8
Early online date25 Jul 2019
DOIs
Publication statusPublished - 1 Nov 2019

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