Aim Understanding the mental foramen (MF) position and prevalence and location of the anterior loop (AL) is important during clinical and surgical procedures close to the mental foramen to avoid damage to the neurovascular bundle. The current study was done to determine the location of the MF, its distance from the inferior border of the mandible, and prevalence of AL in Egyptian population using cone beam computed tomography (CBCT). Methods A retrospective analysis of CBCT images was done in this study. Images of Egyptian patients who have already been subjected to CBCT examination as part of their dental diagnosis and/or treatment planning were included according to the proposed eligibility criteria. Results This study showed that the most common location of the MF (43.8% on the left side and 67.9% on the right side) is located below the apex of the second premolar. The mean size of mental foramen showed a height of 3.32 mm in females, 3.60 mm in males, and a width of 3.41 mm in females and 3.59 mm in males. The mean value of distance from inferior border was 10.08 mm in females and 10.55 mm in males. Fifty-five percent of the cases showed presence of anterior loop. Conclusion These results are consistent with similar radiographic studies regarding size and location of MF and distances between MF and adjacent anatomic structures. The most common position of the MF is below the 2nd premolar. AL was found in more than half of the cases examined.

The presence of accessory mental foramina (AMF) in mandible is a rare anatomical variation. Single accessory mental foramen is reported in a few studies, but double AMF (DAMF) is very uncommon. We present an unusual case of DAMF, with accessory nerves, which were identified during maxillofacial oncology surgery. The nerves were protected by a modified mandibulotomy. It is essential that surgeons to be aware of the possibility of AMF existence and are prepared to take appropriate actions to avoid iatrogenic nerve injury.

Background: The aim of this study was to investigate the most common accurate position of the mental foramen in selected Kashmiri population, which helps in several clinical procedure and nerve block anesthesia. Methods: The study sample included one thousand panoramic radiographs of selected population of Kashmir that presented to postgraduate department of oral and maxillofacial surgery, Govt. dental college and hospital Srinagar from 2008 to 2015. Results: The most common Horizontal position of the mental foramen was below the root of second premolar tooth i.e. position 4 (44.77%). Conclusion: This may help the clinicians and anthropologists in identifying the mental foramen more accurately.