Table 1 Definition of lip vermilion measurements
Variable | Definition |
|---|---|
Landmarks in the midline | |
Ls | Labiale superius |
Li | Labrale inferius |
Bilateral landmarks | |
R.Chp (right chresta philtri) | Most prominent point of the vermilion border of right chresta philtri of the upper lip |
L.Chp (left chresta philtri) | Most prominent point of the vermilion border of left chresta philtri of the upper lip |
R.Ch (right cheilion) | Most lateral extent of the outline of the lip on the right side |
L.Ch (left cheilion) | Most lateral extent of the outline of the lip on the left side |
Linear measurements (mm) | |
Mouth height | Vertical distance between labrale superius (Ls) and labrale inferius (Li) |
Philtrum width | Horizontal distance between right and left chresta philtri (Chp) |
Mouth width | Horizontal distance between right and left cheilion (Ch) |
Area measurements (mm2) | |
Upper vermilion area | Area of the upper vermilion along the surface |
Lower vermilion area | Area of the lower vermilion along the surface |
Total vermilion area | Area of the upper and lower vermilion along the surface |