| Orbitale |
OrLOrR |
The most inferior point of left infraorbital rimThe most inferior point of right infraorbital rim |
| Porion |
PoL,PoR |
The highest points of the left external acoustic meatusThe highest points of the right external acoustic meatus |
| Average orbitale |
OrA |
Midpoint between the OrR and OrL. |
| Nasion |
N |
The middle point of the frontonasal suture |
| Anterior nasal spine |
ANS |
The most anterior midpoint of the anterior nasal spine of the maxilla |
| Point A |
A |
The innermost point on the contour of the premaxilla between ANS and U1 |
| Point B |
B |
The innermost point on the contour of the mandible between bony chin and L1 |
| Upper incisor |
U1 |
Midoint between the crowns of the maxillary central incisors |
| Lower incisor |
L1 |
Midpoint contact between the crowns of the mandibular central incisors. |
| Pogonion |
Pog |
The most anterior midpoint of the chin on the outline of the mandibular symphysis |
| Menton |
Me |
The most inferior midpoint of the chin on the outline of the mandibular symphysis. |
| Maxillary canine |
U3LU3R |
Cusp of the left maxillary canineCusp of the right maxillary canine |
| Mandibular canine |
L3LL3R |
Cusp tip of the left mandibular canineCusp tip of the right mandibular canine |
| First maxillary molar |
U6LU6R |
Mesio-buccal cusp of the left first maxillary molarMesio-buccal cusp of the right first maxillary molar |
| Lateral condyle point |
Cd latLCd latR |
The most lateral point of left condyle headThe most lateral point of right condyle head |
| Lateral gonion |
Go latLGo latR |
The most lateral point of left gonionThe most lateral point of right gonion |
| Frankfort horizontal plane |
FH plane |
A plane passing PoL, PoR, and OrA |
| Coronal plane |
A plane perpendicular to FH plane, through right and left porion |
| Sagittal plane |
|
A plane perpendicular to the FH and coronal planes, through nasion |
