Figure 1.
Landmarks identified in the nasolabial region and three-dimensional (3D) linear distances and angles computed in the analyzed subjects: (A) mouth width (chr-chl) and width of the philtrum (cphr-cphl); (B) superior width of the nostrils (stnr-stnl), nasal width (alr-all), inferior width of the nostrils (itnr-itnl), alar base width (acr-acl), nasal tip protrusion (prn-alm), right and left length of the nostrils (stn-itn), and alar slope angle (alr-prn-all); (C) height of the cutaneous upper lip (sn-ls), vermilion height of the upper lip (ls-sto), vermilion height of the lower lip (sto-li), total (cutaneous) lip height (sn-sl), and total vermilion height (ls-li); (D) nasal angles: nasolabial (prn-sn-ls), interlabial ([sn-ls]-[li-sl]), and mentolabial (li-sl-pg); and (E) nasal angles: nasal prominence (sn-n-prn) and nasal tip (n-prn-sn).