Question 1

Pulp tissue consists of blood vessels,lymphatic vessels,nerves,fibroblasts,and collagen fibers.The nerves of the pulp are primarily sensory and transmit both pain and thermal sensations.

Accepted Answer

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.E) A) and B)
F) A) and C)

Question 2

Which of the following are true of pulp stones (Select all that apply. ) ?

Accepted Answer

A)   They are small,circular,calcified areas.
B)   They occur in about 50% of people aged 70 to 80 years.
C)   True pulp stones originate from ameloblasts.
D)   False stones are most common.
E)   False stones resemble an onion cut in cross section.F) D) and E)
G) All of the above

Question 3

An enamel spindle is an ameloblastic process that becomes trapped in dentin.Enamel spindles form in early development and are seen only histologically.

Accepted Answer

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.E) A) and B)
F) C) and D)

Question 4

The dental papilla is derived from the ectoderm.It determines the shape of the developing crown.

Accepted Answer

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.E) All of the above
F) A) and C)

Question 5

The primary abnormality seen in pulp is pulp stones.

Accepted Answer

A) True 
 B)False

Question 6

Young people are less susceptible to permanent pulpal damage than older people because with age the smaller pulp loses its reserve cells and is less able to resist trauma.

Accepted Answer

A)   Both the statement and the reason are correct and related.
B)   Both the statement and the reason are correct but are NOT related.
C)   The statement is correct,but the reason is NOT correct.
D)   The statement is NOT correct,but the reason is correct.
E)   NEITHER the statement NOR the reason is correct.F) C) and D)
G) C) and E)

Question 7

Each of the following accurately describes hypocalcified enamel EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)   Hydroxyapatite crystals are not full size.
B)   The tooth may be more caries prone.
C)   Enamel is less dense.
D)   Enamel is more than 96% inorganic.E) C) and D)
F) All of the above

Question 8

Once formed,the often stained primary cuticle can be removed by (Select all that apply. ) :

Accepted Answer

A)   Regular toothbrushing
B)   Dental scaling
C)   Dental prophylaxis
D)   Tooth bleachingE) B) and D)
F) B) and C)

Question 9

Hundreds of odontoblasts are damaged when restoration is prepared and placed within a tooth.Sclerotic dentin forms in response to the trauma.

Accepted Answer

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.E) C) and D)
F) B) and D)

Question 10

Tooth development is first seen at the incisal edge or cusp tip.

Accepted Answer

A) True 
 B)False

Question 11

During the maturation stage of calcification,an ameloblast produces enamel at what rate?

Accepted Answer

A)   0.02 mm per hour
B)   2 mm per day
C)   4 mm per day
D)   10 mm per hourE) All of the above
F) A) and B)

Question 12

Enamel,dentin,and pulp develop from enamel organ.Enamel is derived from ectoderm whereas dentin and pulp are derived from mesoderm.

Accepted Answer

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.E) A) and B)
F) All of the above

Question 13

After the ameloblast secretes the primary enamel cuticle it is called the reduced enamel epithelium because it becomes flattened and blends with outer enamel epithelial cells.

Accepted Answer

A)   Both the statement and the reason are correct and related.
B)   Both the statement and the reason are correct but are NOT related.
C)   The statement is correct,but the reason is NOT correct.
D)   The statement is NOT correct,but the reason is correct.
E)   NEITHER the statement NOR the reason is correct.F) C) and E)
G) A) and D)

Exam 20: Enamel, Dentin, and Pulp

Young people are less susceptible to permanent pulpal damage than older people because with age the smaller pulp loses its reserve cells and is less able to resist trauma.

Correct Answer
verified

Each of the following accurately describes hypocalcified enamel EXCEPT one.Which one is the EXCEPTION?

Correct Answer
verified

Pulp tissue consists of blood vessels,lymphatic vessels,nerves,fibroblasts,and collagen fibers.The nerves of the pulp are primarily sensory and transmit both pain and thermal sensations.

Correct Answer
verified

Once formed,the often stained primary cuticle can be removed by (Select all that apply. ) :

Correct Answer
verified

During the maturation stage of calcification,an ameloblast produces enamel at what rate?

Correct Answer
verified

Tooth development is first seen at the incisal edge or cusp tip.

Correct Answer
verified

Hundreds of odontoblasts are damaged when restoration is prepared and placed within a tooth.Sclerotic dentin forms in response to the trauma.

Correct Answer
verified

The primary abnormality seen in pulp is pulp stones.

Correct Answer
verified

Which of the following are true of pulp stones (Select all that apply. ) ?

Correct Answer
verified

An enamel spindle is an ameloblastic process that becomes trapped in dentin.Enamel spindles form in early development and are seen only histologically.

Correct Answer
verified

Enamel,dentin,and pulp develop from enamel organ.Enamel is derived from ectoderm whereas dentin and pulp are derived from mesoderm.

Correct Answer
verified

After the ameloblast secretes the primary enamel cuticle it is called the reduced enamel epithelium because it becomes flattened and blends with outer enamel epithelial cells.

Correct Answer
verified

The dental papilla is derived from the ectoderm.It determines the shape of the developing crown.

Correct Answer
verified

Exam 20: Enamel, Dentin, and Pulp

Young people are less susceptible to permanent pulpal damage than older people because with age the smaller pulp loses its reserve cells and is less able to resist trauma.

Correct AnswerverifiedShow Answer

Each of the following accurately describes hypocalcified enamel EXCEPT one.Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

Pulp tissue consists of blood vessels,lymphatic vessels,nerves,fibroblasts,and collagen fibers.The nerves of the pulp are primarily sensory and transmit both pain and thermal sensations.

Correct AnswerverifiedShow Answer

Once formed,the often stained primary cuticle can be removed by (Select all that apply. ) :

Correct AnswerverifiedShow Answer

During the maturation stage of calcification,an ameloblast produces enamel at what rate?

Correct AnswerverifiedShow Answer

Tooth development is first seen at the incisal edge or cusp tip.

Correct AnswerverifiedShow Answer

Hundreds of odontoblasts are damaged when restoration is prepared and placed within a tooth.Sclerotic dentin forms in response to the trauma.

Correct AnswerverifiedShow Answer

The primary abnormality seen in pulp is pulp stones.

Correct AnswerverifiedShow Answer

Which of the following are true of pulp stones (Select all that apply. ) ?

Correct AnswerverifiedShow Answer

An enamel spindle is an ameloblastic process that becomes trapped in dentin.Enamel spindles form in early development and are seen only histologically.

Correct AnswerverifiedShow Answer

Enamel,dentin,and pulp develop from enamel organ.Enamel is derived from ectoderm whereas dentin and pulp are derived from mesoderm.

Correct AnswerverifiedShow Answer

After the ameloblast secretes the primary enamel cuticle it is called the reduced enamel epithelium because it becomes flattened and blends with outer enamel epithelial cells.

Correct AnswerverifiedShow Answer

The dental papilla is derived from the ectoderm.It determines the shape of the developing crown.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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