Cephalometric values

Question 1

S

Answer 1

Sella turcica, midpoint of the pituitary fossa

Question 2

N

Answer 2

Nasion - most anterior point of the frontonasal suture

Question 3

A point

Answer 3

Deepest concavity on the anterior maxilla

Question 4

B point

Answer 4

Deepest concavity on the anterior of the mandibular symphysis

Question 5

Go

Answer 5

Gonion - most inferior, posterior part of the angle of the mandible

Question 6

Po

Answer 6

Pogonion - the most anterior point of the mandibular symphysis

Question 7

Me

Answer 7

Menton - the most inferior point of the mandibular symphysis

Question 8

SNA angle

Answer 8

Relates the maxilla to the cranial base. 82 degrees

Question 9

SNB angle

Answer 9

Relates the mandible to the cranial base. 80 degrees

Question 10

ANB angle

Answer 10

Gives information on the relative positions of the mandible and maxilla. 2 degrees. (0-4)

Question 11

Nasolabial angle

Answer 11

Between the base of the nose and the upper lip, giving information on lip protrusion. 90-110 degrees.

Question 12

Angle of convexity

Answer 12

Between -1 and 2 degrees for Class I skeletal pattern

Question 13

Upper incisor inclination

Answer 13

110 degrees

Question 14

Lower incisor inclination

Answer 14

90 degrees

Question 15

MMPA

Answer 15

Maxillo-mandibular plane angle. 27 degrees.