Cephalometric landmark definitions Flashcards
1
Q
Point S? (3)
A
- Sella Turcica
- Midpoint of sella turcica (concavity in hypophyseal fossa)
2
Q
Point N? (4)
A
- Nasion
- Most anterior point of front nasal suture
- small depression between the 2 bones
- frontal bone continues more radiolucent
3
Q
Point Or? (2)
A
- Orbital
- most inferior point on orbital margin
4
Q
Point Pt? (4)
A
- pterygoid
- Most posterior superior point of pteygopalatine fossa
- 10 oclock
- beside deepest wall of maxillary sinus
5
Q
Point Po? (4)
A
- Porion
- uppermost outermost point on bony external auditory meatus (entrance of ear)
- 3mm behind condyle
- 12 o clock
6
Q
Point Co? (2)
A
- Condylion
- superior posterior point on head of mandibular condyle
7
Q
Point Go? (4)
A
- Gonion
- Most posterior inferior point on angle of mandible
- junction between ramus and body
- Trace tangent to body and ramus and divide angle
8
Q
Point Pog? (2)
A
- Pogonion
- Most anterior part on bony chin
9
Q
Point Gn? (3)
A
- Gnathion
- Most anterior inferior part of mandibular symphysis
- between pogonion and menton (draw tangent and divide)
10
Q
Point Me? (3)
A
- Menton
- Lowest part of mandibular symphysis
- junction between body and menton
11
Q
Point B? (3)
A
- Supramentale
- most posterior point on profile of mandible
- deepest part between chin point and alveolar crest
12
Q
Point D? (2)
A
- name??
- Central point of mandibular symphysis
13
Q
Point ANS? (1)
A
-tip of Anterior nasal spine
14
Q
Point PNS? (2)
A
- Tip of posterior nasal spine
- junction between hard and soft palate
15
Q
Point A? (2)
A
- Subespinale
- Most posterior point on profule of maxilla
