Table 1.

Definition of cephalometric measurements analyzed.

Measurement	Definition
Nasolabial Angle (°)	Angle between the nasal base and upper lip, analyzing the protrusion of the upper lip in relation to the nasal base.
Mentolabial Angle (°)	Angle between the lower lip and anterior mentum projection, analyzing the protrusion of the lower lip in relation to the mentum.
Interlabial Angle (°)	Angle between the upper and lower lips, determining the degree of lip protrusion.
Facial Convexity Angle (°)	Supplement of the angle between the intersection of glabella-subnasal and subnasal-soft tissue pogonion lines, determining the degree of facial profile convexity.
Total Facial Convexity Angle (°)	Angle between the intersection of glabella-nose tip and nose tip-soft tissue pogonion lines, determining the degree of facial profile convexity involving the nasal projection.
Lower Face Angle (°)	Angle between the subnasal-soft tissue gnathion and soft tissue gnathion-cervical lines, analyzing the anterior projection of the mentum.
MAFH/LAFH Proportion	Analyzes the proportion between glabella-subnasal and subnasal-soft tissue mentum distances.
Lower Face Vertical Proportion	Proportion between subnasal-stomion and stomion-soft tissue mentum distances.
H.NB Angle (°)	Angle between intersection of NB and H lines, line formed by the union of soft tissue pogonion (Pg’) and the most prominent point in the upper lip (Ls).
Ricketts E Line (mm)	Determined by the union of soft tissue pogonion (Pg’) and nasal projection (En), describing the position of the lower lip 2 mm behind the E line as ideal.