Deck 2: The Tooth: Functions and Terms

Question 1

Each of the following teeth is developed from four lobes EXCEPT one.Which one is the EXCEPTION?

A) Maxillary incisor
B) Mandibular canine
C) Maxillary first molar
D) Mandibular second molar

Answer 1

C
Incisors,canines,and most premolars are developed from four lobes-three facial and one lingual.Second molars are developed from four lobes-two facial and two lingual.First molars develop from five lobes.

Question 2

The function of both incisors and premolars is to cut food.The function of molars is to cut,grind,and chew food.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statements are false.

Answer 2

D
Both statements contain incorrect information.While it is true that the function of incisors is to tear food,premolars are more like molars;their pointed buccal cusps hold food while the lingual cusps grind it.Regarding the second statement,the function of molars is to grind and chew food;tearing or incising is NOT a molar function.

Question 3

In the illustration below,structure "a" represents the

A) distal marginal ridge
B) mesial marginal ridge
C) lingual fossa
D) lingual groove

Answer 3

C
Structure "a" in the illustration is the lingual fossa.A fossa is a depression,concavity,or an area on the tooth that is indented.Fossae are named for their location;the fossa represented in the question is a lingual fossa.Structures b,c,and d are the mesial marginal ridge,the lingual groove,and the distal marginal ridge,respectively.

Question 4

Which dental tissue is composed of 70% inorganic and 30% organic matter?

A) Dentin
B) Enamel
C) Cementum
D) Bone

Question 5

The dental tissue that most resembles bone is

A) cementum
B) dentin
C) enamel
D) none of the above

Question 6

Each of the following terms refers to an "in-between" surface EXCEPT one.Which one is the EXCEPTION?

A) Facial
B) Mesial
C) Distal
D) Proximal

Question 7

The sensation of pain is felt in which part of the tooth?

A) Enamel
B) Dentin
C) Cementum
D) Pulp

Question 8

How many surfaces does a posterior tooth have?

A) 2
B) 3
C) 4
D) 5
E) 6

Question 9

In the illustration below,structure "b" is the

A) distal marginal ridge
B) mesial marginal ridge
C) lingual fossa
D) lingual groove

Question 10

In the illustration below,structure "c" is the

A) distal marginal ridge
B) mesial marginal ridge
C) lingual fossa
D) lingual groove

Question 11

The hard yellow tissue that makes up the bulk of the tooth is called the

A) enamel
B) dentin
C) cementum
D) pulp

Question 12

None of the following tissues have the ability to regenerate EXCEPT one.Which one is the EXCEPTION?

A) Enamel
B) Dentin
C) Pulp
D) Periodontal ligament

Question 13

Pulp canals

A) are located in the crown portion
B) have hornlike projections
C) occupy the root portion
D) occupy both the crown and root portion

Question 14

The tooth surface facing the lip is called the mesial surface.The corresponding surface facing the cheek is called the distal surface.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statements are false.

Question 15

The prominence on the cervical third of the lingual aspect of anterior teeth is called the

A) cervical line
B) lingual ridge
C) marginal ridge
D) cingulum
E) lingual cusp

Question 16

The CEJ is where enamel meets the

A) dentin
B) junction
C) cementum
D) cervical third

Question 17

In a partially erupted tooth,the visible portion is called the clinical crown.The anatomic crown is not yet fully formed.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statements are false.

Question 18

All of the following formations are depressions EXCEPT one.Which one is the EXCEPTION?

A) Fossa
B) Marginal ridge
C) Developmental groove
D) Lingual pit
E) All of the above are depressions.

Question 19

Which structure separates primary parts of a crown or root?

A) Marginal ridge
B) Developmental groove
C) Developmental pit
D) Transverse ridge
E) B and C

Question 20

Which of the following is an example of a line angle?

A) Mesiolabioincisal
B) Buccolingual
C) Mesiodistal
D) Labioincisal
E) Inciso-occlusal

Question 21

Roots of molars can be bifurcated or trifurcated.

Question 22

The lower the root to crown ratio number the more resistance a tooth would have to displacement.

Question 23

Which of the following structures represent a concavity or depression within the surface of a tooth (Select all that apply. )?

A) Pit
B) Fossa
C) Tubercle
D) Cusp
E) Groove

Question 24

MATCHING
Teeth are comprised of the four tissue types listed below.While examining and treating teeth dental professionals must understand the composition and characteristics of each tissue type.Match the tissue type with the appropriate description.
a.Enamel
b.Cementum
c.Dentin
d.Pulp
Outer covering of root

Question 25

Edentulous people may have problems speaking properly.

Question 26

MATCHING
Teeth are comprised of the four tissue types listed below.While examining and treating teeth dental professionals must understand the composition and characteristics of each tissue type.Match the tissue type with the appropriate description.
a.Enamel
b.Cementum
c.Dentin
d.Pulp
Hardest mineralized tissue

Question 27

Cellular cementum has the ability to reproduce itself.

Question 28

In the following illustration,structure "a" refers to a fossa,which is a convexity or bulge on a tooth.Structure "b" refers to a ridge,which is a concavity or depression within a tooth.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statement are false.

Question 29

The pulp is composed of which of the following tissues (Select all that apply. )?

A) Lymph tissue
B) Connective tissue
C) Nerve tissue
D) Odontoblasts
E) Alveolus

Question 30

MATCHING
Teeth are comprised of the four tissue types listed below.While examining and treating teeth dental professionals must understand the composition and characteristics of each tissue type.Match the tissue type with the appropriate description.
a.Enamel
b.Cementum
c.Dentin
d.Pulp
Has a sensory function

Question 31

MATCHING
Teeth are comprised of the four tissue types listed below.While examining and treating teeth dental professionals must understand the composition and characteristics of each tissue type.Match the tissue type with the appropriate description.
a.Enamel
b.Cementum
c.Dentin
d.Pulp
Tissue next to pulp

Question 32

The part of the tooth that shows when someone opens their mouth is the anatomic crown.

Question 33

In the illustration below,structure "d" is the

A) distal marginal ridge
B) mesial marginal ridge
C) lingual fossa
D) lingual groove

Question 34

Mesio-occlusodistal is a location of a point angle.

Question 35

All anterior teeth have cusps.