premolars identification

Question 1

name how many facial and lingual lobes there are

Answer 1

3 facial, 1 lingual

Question 2

what is the cingulum called on premolars?

Answer 2

lingual cusp

Question 3

all premolars have 1 lingual cusp except which one?

Answer 3

mandibular 2nd , it has 2. So it has a total of 5 lobes ( 3 facial 2 lingual)

Question 4

facial surface of tooth is called what

Answer 4

buccal

Question 5

incisal surface is called what?

Answer 5

occlusal

Question 6

what are the two cusps called

Answer 6

buccal cusp, lingual cusp

Question 7

which PM 50% of the time has 2 lingual cusps?

Answer 7

second mandibular

Question 8

which PM has a marginal ridge that is oblique?

Answer 8

mandibular 1st PM

Question 9

facial height of contour on PM

Answer 9

cervical 3rd,

Question 10

what is the exception for height of contour of PM?

Answer 10

mandibular first pm buccal height

Question 11

lingual height of contour on PM?

Answer 11

middle 3rd of crown

Question 12

where is the proximal contact area for PM?

Answer 12

located more cervically

Question 13

where is the PM facial cusp ?

Answer 13

slightly more mesial

Question 14

what is the exception for PM facial cusp location?

Answer 14

maxillary first, it is slightly more distal

Question 15

what is a occlusal table?

Answer 15

cusps and ridges combined look like tables

Question 16

what forms the transverse ridge?

Answer 16

the two triangular ridges ( one buccal, one lingual)

Question 17

which tooth doesn’t have a transverse ridge?

Answer 17

a 3 cusped mandibular second premolar

Question 18

which PM doesn’t have a groove running mesiodistally?

Answer 18

mandibular 1st PM