1 |
S |
Midpoint of the sella turcica of the sphenoid bone |
2 |
N |
Most anterior point of the frontonasal suture in the midsagittal plane |
3 |
Po |
Superior most point of the external auditory meatus |
4 |
Or |
Lowest point in the inferior margin of the orbit |
5 |
Point A |
Most posterior point in the concavity between anterior nasal spine and the dental alveolus |
6 |
Point B |
Most posterior point on the concavity along the anterior surface of the symphysis |
7 |
Ar |
Point of intersection of the contour of the posterior border of the mandibular condylar process and the inferior border of the basilar part of the occipital bone |
8 |
Go |
The most convex point along the inferior border of the ramus |
9 |
Me |
The most inferior point of the symphysis |
10 |
Rgn |
Retrognathic point, i.e. the most posterior point of symphysis |
11 |
H |
The most superior and anterior points on the body of the hyoid bone |
12 |
Tt |
Tongue tip |
13 |
Eb |
Base of epiglottis |
14 |
P |
Tip of soft palate |
15 |
C3 |
Antero-inferior limit of the third cervical vertebra |
16 |
PNS |
Tip of the posterior nasal spine |
17 |
MnP |
Mandibular plane, a line joining menton (Me) and gonion (Go) |
18 |
Go–B line |
A line joining Go and point B |
19 |
U1 |
Axial inclination of the maxillary incisor |
20 |
L1 |
Axial inclination of the mandibular incisor |
21 |
Frankfort horizontal plane (FHP) |
Horizontal plane connecting porion and orbitale |
22 |
Middle pharyngeal wall (Mpw) |
Junction of perpendicular line from P to the posterior pharyngeal wall |
23 |
Lower pharyngeal wall (Lpw) |
Junction of perpendicular line from V to the posterior pharyngeal wall |
24 |
Hyoid plane (HP) |
Line connecting the most superior anterior point on the body of the hyoid bone (Hyoidale, H-point) and the most posterior point of the greater horn of the hyoid bone (G-point). |