Molars

Question 1

How many roots do molars possess

Answer 1

Uppers - 3
Lowers - 2

Question 2

Characteristics of an upper first molar

Answer 2

Diamond shaped
Very small disto-palatal cusp
Strong ridge of enamel (oblique ridge)

Question 3

What is found either side of the oblique ridge

Answer 3

Fissure

Question 4

Which tooth often possesses a H like shape on the occlusal surface

Answer 4

Upper first molar

Question 5

Which cusp is bordered by a fissure which runs onto the buccal surface on the upper first molar

Answer 5

Meso-buccal cusp

Question 6

Which cusp is largest on an upper first molar

Answer 6

mesio-palatal

Question 7

What two cusps form the oblique ridge

Answer 7

Mesio-palatal
Disto-buccal

Question 8

What percentage of first molars have a tubercle of carabelli

Answer 8

60%

Question 9

Which cusp would a tubercle of carabelli be found

Answer 9

Mesio-palatal

Question 10

Where are the 3 roots on an upper first molar situated

Answer 10

2 buccal
1 palatal
Lingual root is in the same plane as the disto-buccal root

Question 11

Which tooth is smaller upper 1st or 2nd molar

Answer 11

2nd

Question 12

Which tooth may be missing a disto-palatal cusp

Answer 12

Upper second molar

Question 13

Which shape can an upper 2nd molar be classified as

Answer 13

Triangle

Question 14

Which tooth often has a partially fused roots

Answer 14

Upper 2nd molar

Question 15

Which molar has the smallest crown with usually only 3 cusps

Answer 15

Upper 3rd molar

Question 16

What cusp would an upper 3rd molar be missing

Answer 16

Disto-lingual cusp

Question 17

Which tooth may show a completely irregular form with a ring of small cuspules

Answer 17

Upper third molar

Question 18

How many cusps does a lower first molar have

Answer 18

5
3-buccal
2-lingual

Question 19

Which is the smallest cusp of a lower first molar

Answer 19

Distal cusp

Question 20

Which tooth possesses a groove starting on the buccal surface deepening into a transverse fissure across the occlusal surface and ending as a groove on the lingual surface

Answer 20

Lower first molar

Question 21

Which root is usually curved, grooved and broader on a lower first molar

Answer 21

Mesial root

Question 22

Which direction do the roots of a lower 1st molar usually point

Answer 22

Distally

Question 23

Which molar is at greater risk of caries

Answer 23

Lower first molar due to the buccal surface pit formed from the buccal groove

Question 24

Which molar often has a square shape

Answer 24

Lower second

Question 25

Which cusp is the largest on a lower second molar

Answer 25

Mesio-buccal cusp

Question 26

How can optimal occlusion be achieved when considering the upper first molars in restoration

Answer 26

Mesial palatal cusp should be on the occlusal plane whereas the buccal cusps should be raised from the plane