# The occipital condyle is represented by the following cephalometric point:
A. Bolton’s point
B. Broadbent registration point
C. Basion
D. Articulare
The correct answer is A. Bolton's point.
Bolton's point: The highest point at the post-condylar notch of occipital bone
Few other cephalometric landmarks are:
1. Glabella: It is the most prominent point on the forehead in the mid-sagittal plane.
2. Nasion: The most anterior point midway between the frontal and nasal bone on the frontonasal suture.
3. Orbitale: The lowest point on the inferior bony margin of the orbit.
4. Porion: The highest bony point on the upper margin of external auditory meatus.
5. Sella: This point represents the mid point of the pituitary fossa or sella-turcica.
6. Basion: It is median point of the anterior margin of the foramen magnum
7. Anterior nasal spine: It is the anterior tip of the sharp bony process of the maxilla in the midline of the lower margin of anterior nasal spine.
8. Point A: It is a deepest point in the midline between the anterior nasal spine and alveolar crest between the two central incisors. It is also called as " subspinale".
9. Prosthion: The lowest and the most anterior point on the alveolar bone in the midline between the upper central incisors. It is also called as " supradentale".
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10. The key ridge: The lower most point on the contour of anterior wall of the infra-temporal fossa.
11. Posterior nasal spine: The intersection of a continuation of the the anterior wall of the pterygopalatine fossa and the floor of the nose, marking the distal limit of the maxilla.
12. Broadbent registration point: It is the midpoint of the perpendicular from the centre of the sella turcica to the Bolton point.
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13 PTM point: It is the intersection of the inferior border of foramen rotundum with posterior wall of the pterygo maxillary fissure.
14. Chelion: It is the lateral terminus of the oral slit on the slit on the outer corner of the mouth.
15. Subnasal: The point where the lowest border of the nose meets the outer contour of the upper lip.
16. Point B: It is the deepest point in the midline between the alveolar crest of mandible and the mental process. Also called as " submentale".
17. Gonion: It is a constructed point at the junction of ramal plane and the mandibular plane.
18. Pogonion: It is the most anterior point of the bony chin in the median plane.
19. Menton: It is the most inferior midline point on the mandibular symphysis.
20. Gnathion: It is the most antero-inferior point on the symphysis of the chin. It is constructed on the symphysis of the chin, by intersecting a line drawn perpendicular to the line connecting menton and pogonion.
21. Articulare: It is a point at the junction of the posterior border of ramus and the inferior border of the basilar part of the occipital bone.
22. Condylion: The most superior point on the head of the condyles.
23. Infradentale: The highest and the most anterior point on the alveolar process, in the median plane between the mandibular incisors.
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