Dentitions, Incisors, Premolars, and Maxillary Molars

Question 0

Which of the following has the WIDEST crown in the mesio-distal dimension?
A) mandibular central incisor
B) mandibular lateral incisor
C) maxillary central incisor
D) maxillary lateral incisor
E) all of the above

Answer 0

C) maxillary central incisor

Question 1

Which of the following has the NARROWEST crown in the mesio-distal dimension?
A) mandibular central incisor
B) mandibular lateral incisor
C) maxillary central incisor
D) maxillary lateral incisor
E) all of the above

Answer 1

(Not c)

Question 2

Which of the following has a larger CEJ curvature on its mesial root compared to the CEJ curvature on its distal root
A) mandibular central incisor
B) mandibular lateral incisor
C) maxillary central incisor
D) maxillary lateral incisor
E) all of the above

Answer 2

(Not d)

Question 3

\_\_\_ have marginal ridges that are near parallel to the long axis of the tooth; \_\_\_ in GENERAL, have marginal ridges that are near 45 degrees to the long axis of the tooth; and \_\_\_ have marginal ridges that are near perpendicular to the long axis of the tooth.
A) centrals, laterals, and canines
B) incisors, premolars, and molars
C) incisors, canines, and molars
D) canines, premolars, and molars

Answer 3

C) incisors, canines, and molars

Question 4

Maxillary central incisors are wider mesio-distally than maxillary lateral incisors. T/F?

Answer 4

True

Question 5

Mandibular central incisors are wider mesio-distally than mandibular lateral incisors. T/F?

Answer 5

False

Question 6

Maxillary first premolars have larger crowns than maxillary second premolars. T/F?

Answer 6

True

Question 7

Mandibular first premolars have larger crowns than mandibular second premolars. T/F?

Answer 7

False

Question 8

Which of the following has a non-functional lingual cusp?
A) mandibular first premolar
B) mandibular second premolar
C) maxillary first premolar
D) maxillary second premolar

Answer 8

(Not c)

Question 9

Which of the following has a mesial depression in the cervical 1/3 of its crown?
A) mandibular first premolar
B) mandibular second premolar
C) maxillary first premolar
D) maxillary second premolar

Answer 9

B) mandibular second premolar

Question 10

Which of the following shapes relate the maxillary molars?
A) rhomboid
B) oval
C) square
D) trapezoid

Answer 10

A) rhomboid

Question 11

What is the biggest, strongest tooth in the maxillary arch?
A) maxillary canine
B) maxillary central
C) maxillary 2nd molar
D) maxillary 1st molar

Answer 11

A) maxillary canine

Question 12

Maxillary first molars are usually ___ where as maxillary second molars can be ___ or ___.

Answer 12

Not C

Question 13

Oblique ridges are found both on maxillary first and maxillary second molars. T/F?

Answer 13

Not b

Question 14

Oblique ridges run from the \_\_\_ cusp to the \_\_\_ cusp,
A) mesio-buccal, disto-lingual
B) mesio-lingual, disto-buccal
C) mesio-buccal, cusp of carabelli
D) mesio-buccal, distal

Answer 14

Not D

Question 15

Teeth that are normally bifurcated in the maxillary arch are:
A) canines, 1st premolars, 2nd premolars
B) 1st premolars, 1st maxillary molars, 2nd maxillary molars
C) centrals, laterals, and canines
D) 1st maxillary premolar only

Answer 15

D) 1st maxillary premolar only

Question 16

Marginal grooves, or spillways, are normally located to the \_\_\_ side of the marginal ridge; and the embrasures are larger on the \_\_\_ side of the contract.
A) buccal; buccal
B) lingual; lingual
C) buccal; lingual
D) lingual; buccal

Answer 16

B) lingual;lingual

Question 17

A secondary groove on the occlusal table of the posteriors is called a:
A) primary groove
B) tertiary groove
C) bifurcated groove 
D) supplemental groove

Answer 17

D) supplemental groove

Question 18

Cusp ridges that extend from the cusp tip down to the central groove on the occlusal table are known as:
A)triangular ridges
B) marginal ridges
C) transverse ridges
D) oblique ridges

Answer 18

A) triangular ridges

Question 19

List the five cusps present in a maxillary first molar

Answer 19

Mesiobuccal
Distobuccal
Mesiolingual
Distolingual
Cusp of carabelli

Question 20

Explain the function and location of spillways

Answer 20

Spillways are where the central grooves runs over the marginal ridge and “spills out”

Question 21

Explain the term succedaneous. Which permanent teeth are succedaneous and which are not?

Answer 21

Succedaneous refers to all permanent teeth that replace their primary teeth. (All teeth except the molars)

Question 22

Function and anatomical characteristic that relates to their function: incisors

Answer 22

Function: bite into, cut
Anatomy: linguo-Incisal edge

Question 23

Function and anatomical characteristic that relates to their function: Canines

Answer 23

Function: pierce
Anatomy: sharp cusp tip

Question 24

Function and anatomical characteristic that relates to their function: Premolars

Answer 24

Function: assist canines and molars with piercing and mastication
Anatomy: sharp cusp tips, larger occlusal surface

Question 25

Function and anatomical characteristic that relates to their function: Molars

Answer 25

Function: chewing, grinding
Anatomy: large occlusal surface