Facial height: It is the distance in mm between N = nasion (point of intersection of the frontonasal and intranasal sutures) and Gn = gnation (the most anterior-inferior point of the chin contour). Face width: It is the distance in mm between left zygomatic (the most prominent point of the zygomatic bone) and right zygomatic = Zy. Cranial length (antero-posterior length): It is the distance in mm between G = glabella (the most prominent point of the frontal bone in the midsagittal plane between the brow ridges) and Op = Opisthocranion (point of the occipital squama, which in the sagittal plane, is located furthest from the glabella point). Cranial width: It is the distance in mm between left Eurion (the most lateral point of the neurocranium) and right Eurion = Eu.
Torres-Restrepo et al. BMC Oral Health 2014 14:50 doi:10.1186/1472-6831-14-50