Permanent Maxillary Premolars

Question 1

Which maxillary premolar has a sharper buccal cusp angle?

Answer 1

First premolar

Question 2

Is the mesial or distal cusp ridge longer of the first premolar?

Answer 2

mesial

Question 3

Is the mesial or distal cusp ridge longer of the second premolar?

Answer 3

distal

Question 4

Which maxillary premolar has a more prominent buccal ridge?

Answer 4

first

Question 5

Which maxillary premolar has a more narrow and round outline?

Answer 5

second

Question 6

Which maxillary premolar has less crown taper from contacts cervically?

Answer 6

second

Question 7

Which maxillary premolar has a depression that is more common mesial to buccal ridge?

Answer 7

first

Question 8

Which maxillary premolar has a depression more common distal to buccal ridge?

Answer 8

second

Question 9

How many lingual cusps do maxillary first premolars have?

Answer 9

two

Question 10

Is the lingual cusp shorter or longer on maxillary first premolars?

Answer 10

shorter

Question 11

Which maxillary premolar tapers more lingually?

Answer 11

first

Question 12

Which maxillary premolar always only has one root?

Answer 12

second

Question 13

Which maxillary premolar can sometimes have two roots or one deeply divided single root?

Answer 13

first

Question 14

On the maxillary first premolar, which root is longer? Buccal or lingual

Answer 14

buccal

Question 15

Which maxillary premolar has a longer buccal cusp than lingual cusp?

Answer 15

first

Question 16

Which maxillary premolar has buccal and lingual cusps with similar lengths?

Answer 16

second

Question 17

Which maxillary premolar does not have a crown depression?

Answer 17

second

Question 18

Which maxillary premolar has a deeper mesial root depression?

Answer 18

first

Question 19

Which maxillary premolar has a deeper distal root depression?

Answer 19

second

Question 20

Which maxillary premolar is less likely to have a mesial marginal groove evident?

Answer 20

second

Question 21

Which maxillary premolar has a symmetrical crown that is more oval shaped?

Answer 21

second

Question 22

What is the shape of maxillary first premolars?

Answer 22

hexagonal and asymmetrical

Question 23

Which maxillary premolar have a flat or concave mesial surface?

Answer 23

first

Question 24

Which maxillary premolar has a more convex mesial surface?

Answer 24

second

Question 25

Which maxillary premolar only tappers lingually slightly?

Answer 25

second

Question 26

Which maxillary premolar has a shorter central groove so that the mesial and distal fossae are closer to the center of the tooth?

Answer 26

second

Question 27

Which maxillary premolar has a longer central groove so that the mesial and distal fossae are closer to the marginal ridge?

Answer 27

first

Question 28

Which maxillary premolar is less likely to have a mesial marginal ridge on the occlusal surface?

Answer 28

second

Question 29

Which maxillary premolar almost always has a mesial marginal ridge evident from the occlusal view?

Answer 29

first

Question 30

Which maxillary premolar has a more prominent buccal ridge from the occlusal view?

Answer 30

first

Question 31

Which maxillary premolar has more supplemental grooves?

Answer 31

second

Question 32

What are the numbers of maxillary first and second premolars?

Answer 32

4, 5, 12, 13

Question 33

When do maxillary first premolars erupt?

Answer 33

10-11

Question 34

When do maxillary second premolars erupt?

Answer 34

10-12

Question 35

What is the average root length of maxillary first premolars?

Answer 35

13.4

Question 36

What is the average root length of maxillary second premolars?

Answer 36

14.0

Question 37

When are the crowns of maxillary first premolars completed?

Answer 37

5-6 years

Question 38

When are the crowns of maxillary second premolars completed?

Answer 38

6-7 years

Question 39

When is the root completed of maxillary first premolars?

Answer 39

13-15 years

Question 40

When is the root completed of maxillary second premolars?

Answer 40

12-14 years

Question 41

How many buccal lobes do maxillary premolars have?

Answer 41

3

Question 42

How many lingual lobes do maxillary premolars have?

Answer 42

1