Nasion (Na point) |
The anterior point of the intersection between the nasal and frontal bones |
Pogonion (Pog) |
The most anterior point on the contour of the chin |
S point |
The midpoint of the cavity of sella turcica |
U1 |
Most facial aspect of Upper incisor in incisal edge |
L1 |
Most facial aspect of lower incisor in incisal edge |
Gonion (Go) |
The midpoint of the contour connecting the ramus and mandibular body |
Gnathion (Gn) |
The center of the inferior point on the mandibular symphysis |
Anterior nasal spine (ANS) |
The tip of the anterior nasal spine |
A point |
Innermost point on the contour of the premaxilla |
Menton (Me) |
The most inferior point on the mandibular symphysis |
Condylon (Co) |
The upper midpoint of the mandibular condyle |
B point |
Innermost point on the contour of the mandible |
Pterygomaxillary fissure (PTM) |
The point at the base of the fissure where the anterior and posterior walls meet |