Osteometric Points

Question 1

Midline point where the coronal and sagittal sutures meet

Answer 1

Bregma

Question 2

Slight midline depression, medial to supraorbital ridges and superior to nasal bone, on the frontal bone

Answer 2

Glabella

Question 3

Most anterior-inferior midline point on the border of the mandible

Answer 3

Gnathion

Question 4

Most posterior-inferior point of the angle of the mandible

Answer 4

Gonion

Question 5

Midline point of where lower lip meets skin

Answer 5

Labrale Inferiorus

Question 6

Depression between lower lip and the chin

Answer 6

Mentolabial Sulcus

Question 7

Most posterior-inferior, mid-sagittal point on the border of the mandible

Answer 7

Menton

Question 8

Midline point at the middle of the superior and inferior borders of the nasal bone

Answer 8

Mid-nasal

Question 9

Mid-point between the philtre (two grooves inferior to the nose)

Answer 9

Mid-philtrum

Question 10

Mid-point between the condyle and angle of the ramus

Answer 10

Mid-ramus

Question 11

Midline point at the fronto-nasal suture

Answer 11

Nasion

Question 12

Most inferior point on the orbita

Answer 12

Orbitale

Question 13

Most anterior-projecting point on the midline of the mandible

Answer 13

Pogonion

Question 14

Most anterior midline point on the maxillary alveolar process

Answer 14

Prosthion

Question 15

Midline point at the most inferior end of the internasal suture

Answer 15

Rhinion

Question 16

Midline point where nasal septum and upper lip merge

Answer 16

Subnasale

Question 17

Most superior point of the cranium

Answer 17

Vertex

Question 18

Most lateral point of the zygomatic arch

Answer 18

Zygion

Question 19

Point on the occlusal where the upper central incisors meet

Answer 19

Incision