Fig. 3From: The assessment of accessory mental foramen in a selected polish population: a CBCT studyMeasurement of distance between MF and AMF. The origin (O) was defined as a centre of the mental foramen and x-axis was parallel to the occlusal plane. The distance (white line) was measured by formula previously proposed by Naitoh et al. [14]: distance = \( \sqrt{x^2+{y}^2} \). White arrowhead- mental foramen, blue arrowhead- accessory mental foramenBack to article page