Question 1

Incremental lines in dentin are also known as

Accepted Answer

A)   lines of von Ebner.
B)   the smear layer.
C)   the granular layer of Tomes.
D)   canaliculi.E) B) and D)
F) B) and C)

Question 2

Odontoblasts have a singular process when they first differentiate.

Accepted Answer

A) True 
 B)False

Question 3

Interglobular dentin is associated with vitamin B deficiency.

Accepted Answer

A) True 
 B)False

Question 4

Mantle dentin contains larger collagen fibers than circumpulpal dentin.

Accepted Answer

A) True 
 B)False

Question 5

Dentin is _______ than enamel.

Accepted Answer

A)   harder
B)   more elastic
C)   a whiter shade
D)   less radiolucentE) None of the above
F) B) and C)

Question 6

The junction between dentin and enamel is scalloped.

Accepted Answer

A) True 
 B)False

Question 7

The appositional growth of dentin is apparent in which feature?

Accepted Answer

A)   Incremental lines
B)   Lateral canaliculi
C)   Transparent dentin
D)   Interglobular spacesE) All of the above
F) B) and D)

Question 8

Which of the following best defines sclerotic dentin?

Accepted Answer

A)   The dentinal matrix that immediately surrounds the dentinal tubule.
B)   The first dentin formed and deposited at the dentinoenamel junction.
C)   Dentin directly underlying mantle dentin,comprising the bulk of primary dentin.
D)   Obliterated tubules,found mainly in areas of attrition,abrasion,fracture,and caries.E) A) and B)
F) A) and C)

Question 9

Which term is preferred to describe when newly recruited (replacement) odontoblasts begin depositing dentin?

Accepted Answer

A)   Reactionary dentin
B)   Response dentin
C)   Reparative dentin
D)   Secondary dentinE) A) and C)
F) A) and D)

Question 10

Mineralized tubules are associated with which type of dentin?

Accepted Answer

A)   Mantle
B)   Sclerotic
C)   Reparative
D)   SecondaryE) All of the above
F) A) and D)

Question 11

Which type of dentin borders the pulp?

Accepted Answer

A)   Globular
B)   Predentin
C)   Reactionary
D)   CircumpulpalE) A) and B)
F) None of the above

Question 12

_______ are extensions of the odontoblast process into enamel.

Accepted Answer

A)   Dead tracts
B)   Neonatal lines
C)   Enamel spindles
D)   Lines of von EbnerE) C) and D)
F) None of the above

Question 13

Secondary dentin is the result of insufficient mineralization.

Accepted Answer

A) True 
 B)False

Question 14

Dead tracts develop when odontoblasts die from trauma or old age.

Accepted Answer

A) True 
 B)False  True

Question 15

The granular layer of Tomes is located in the _________.

Accepted Answer

A)   dentin of the root
B)   dentin of the crown
C)   periodontal ligament
D)   cementum of the rootE) C) and D)
F) A) and B)

Question 16

Odontoblast organelles are usually located within the cytoplasmic process.

Accepted Answer

A) True 
 B)False

Question 17

Which type of dentin is formed prior to tooth function and is the major component of the crown and root of the tooth?

Accepted Answer

A)   Mantle dentin
B)   Circumpulpal dentin
C)   Secondary dentin
D)   Tertiary dentinE) B) and C)
F) A) and B) B

Question 18

Dentin is responsive to the environment.

Accepted Answer

A) True 
 B)False

Question 19

Which is the following is a hypermineralized collar of dentin surrounding the tubules?

Accepted Answer

A)   Sclerotic dentin
B)   Peritubular dentin
C)   Intertubular dentin
D)   Interglobular dentinE) C) and D)
F) A) and B) B

Question 20

Odontoblastic processes taper in diameter,being largest near the dentinoenamel junction and smallest near the pulp.

Accepted Answer

A) True 
 B)False

Exam 8: Dentin

Incremental lines in dentin are also known as

Correct AnswerverifiedShow Answer

Odontoblasts have a singular process when they first differentiate.

Correct AnswerverifiedShow Answer

Interglobular dentin is associated with vitamin B deficiency.

Correct AnswerverifiedShow Answer

Mantle dentin contains larger collagen fibers than circumpulpal dentin.

Correct AnswerverifiedShow Answer

Dentin is _______ than enamel.

Correct AnswerverifiedShow Answer

The junction between dentin and enamel is scalloped.

Correct AnswerverifiedShow Answer

The appositional growth of dentin is apparent in which feature?

Correct AnswerverifiedShow Answer

Which of the following best defines sclerotic dentin?

Correct AnswerverifiedShow Answer

Which term is preferred to describe when newly recruited (replacement) odontoblasts begin depositing dentin?

Correct AnswerverifiedShow Answer

Mineralized tubules are associated with which type of dentin?

Correct AnswerverifiedShow Answer

Which type of dentin borders the pulp?

Correct AnswerverifiedShow Answer

_______ are extensions of the odontoblast process into enamel.

Correct AnswerverifiedShow Answer

Secondary dentin is the result of insufficient mineralization.

Correct AnswerverifiedShow Answer

Dead tracts develop when odontoblasts die from trauma or old age.

Correct AnswerverifiedTrue

The granular layer of Tomes is located in the _________.

Correct AnswerverifiedShow Answer

Odontoblast organelles are usually located within the cytoplasmic process.

Correct AnswerverifiedShow Answer

Which type of dentin is formed prior to tooth function and is the major component of the crown and root of the tooth?

Correct AnswerverifiedB

Dentin is responsive to the environment.

Correct AnswerverifiedShow Answer

Which is the following is a hypermineralized collar of dentin surrounding the tubules?

Correct AnswerverifiedB

Odontoblastic processes taper in diameter,being largest near the dentinoenamel junction and smallest near the pulp.

Correct AnswerverifiedShow Answer

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True

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B

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B

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