Anatomical Variations of Accessory Mental Foramen: Incidence and Clinical Significance — A Case Study

Mental foramen (MF) is situated in anterolateral aspect of the body of the mandible, located below the interval between the premolars. It transmits the mental nerve and vessels, which supply the lower lip, chin and gingiva. Any foramen in addition to mental foramen in the body of the mandible is known as accessory mental foramen (AMF). Aim: To review the morphological characteristics, incidence, and morphometry of the AMF. Objective: To emphasize its clinical relevance in oral and maxillofacial procedures. Material and method: During an anatomical study of mandible, an accessory mental foramen was found. The frequency of the AMF was calculated, and its dimensions and its relationship with different landmarks to the teeth of the mandible and the mental foramen were determined as well. Result: Out of 92 mandibles, on right side of body of one mandible an AMF was present.