Pre-molars

Question 1

What is the FDI notation for the upper first premolars

Answer 1

14, 24

Question 2

Which premolar is often very round in shape

Answer 2

Lower second pre-molar

Question 3

What premolars have 2 roots

Answer 3

Upper first

Question 4

What tooth has a much narrower palatal surface and a concave mesial side for the canine fossa

Answer 4

Upper first pre molar

Question 5

How many cusps do the upper pre molars have

Answer 5

2

Question 6

Which ridge does the fissure on the upper first pre molar cross

Answer 6

Mesial marginal ridge

Question 7

The two cusps are separated by a sharp fissure running mesiodistally, which does not reach the distal marginal ridge, but often
extends across the mesial marginal ridge on to the mesial surface.
Identify the tooth

Answer 7

Upper first pre molar

Question 8

Which side of a premolar has a greater root depression

Answer 8

Distal

Question 9

-Cusps are of almost equal size
-The two cusps are separated by a
fissure running mesio-distally, which
does not reach the marginal ridges
-The distal marginal ridge is more cervical than the mesial marginal ridge
-The occlusal surface is more
symmetrical, with only slight mesial
displacement of the lingual cusp

Answer 9

Upper second pre molar

Question 10

Which tooth has a tip which lies almost above the centre of the tooth

Answer 10

Lower first per molar

Question 11

Which lingual cusp is larger on a lower second pre molar

Answer 11

Mesial

Question 12

-Has one buccal cusp
-Has one or two lingual
cusps
-Often shows mesial displacement of
a single lingual cusp, or if there are
two lingual cusps, the mesial one is
often larger.

Answer 12

Lower second pre molar

Question 13

What ignorance could result in improper contact relationship with the distal proximal surface of the canine causing overhang can occur.

Answer 13

Canine fossa on the mesial aspect of upper first pre molar

Question 14

What does ipsilateral mean

Answer 14

Belonging to or occurring on the
same side of the body