Question 1

The periodontal ligament is thinnest in the midroot zone.

Accepted Answer

A) True 
 B)False

Question 2

Receptors and nerves located in the periodontal ligament transmit information regarding pressure and mandibular position.

Accepted Answer

A) True 
 B)False

Question 3

Which change is associated with the aging of cementum and alveolar bone?

Accepted Answer

A)   Scalloping
B)   Cellular hyperactivity
C)   Increased cell reproduction
D)   Fiber attachments cover the entire surfaceE) None of the above
F) All of the above

Question 4

The periodontal ligament (periodontium) has a width of _________ mm.

Accepted Answer

A)   0.015 to 0.038
B)   0.15 to 0.38
C)   0.045 to 0.080
D)   0.45 to 0.80E) None of the above
F) B) and D)

Question 5

______________ create and destroy collagen fibers,as needed.

Accepted Answer

A)   Fibroblasts
B)   Osteoclasts
C)   Macrophages
D)   CementoblastsE) B) and C)
F) A) and D)

Question 6

Which of the following is found on the surface of cementum?

Accepted Answer

A)   Fibroblasts
B)   Cementicles
C)   Cementocytes
D)   CementoblastsE) A) and C)
F) None of the above D

Question 7

Which of the following best defines epithelial rest?

Accepted Answer

A)   Diminished functional activity caused by aging
B)   A decrease in the production of epithelial cells
C)   A marking created by deposition of cementum
D)   A mass of cells in the remnants of the root sheathE) B) and D)
F) A) and B)

Question 8

Fibroblasts are most concentrated in the _______ _________.

Accepted Answer

periodontal ligament

Question 9

Macrophages are normally present in the periodontal ligament.

Accepted Answer

A) True 
 B)False

Question 10

Epithelial rests always occur along the root surface.

Accepted Answer

A) True 
 B)False

Question 11

Which arises from the dental follicular tissue?

Accepted Answer

A)   Dentin
B)   Enamel
C)   Cementicles
D)   PeriodontiumE) All of the above
F) B) and D)

Question 12

List the five dentoalveolar fibers of the periodontal ligament.

Accepted Answer

Apical,horizontal,ob...

Question 13

Cemental spikes occur with excessive deposition around depleted fiber bundles.

Accepted Answer

A) True 
 B)False

Question 14

The periodontal ligament performs which secondary function?

Accepted Answer

A)   Insulating and protecting the pulp
B)   Forming cementum, bone, and enamel
C)   Providing a sensory supply to the cementum
D)   Supplying nutrients to the cementum and alveolar boneE) B) and C)
F) All of the above

Question 15

The most important function of the periodontal ligament is to sense movement.

Accepted Answer

A) True 
 B)False

Question 16

The jaw jerk reflex is a test for which structure?

Accepted Answer

A)   Pterygoid muscle
B)   Trigeminal nerve
C)   Periodontal ligament
D)   Temporomandibular jointE) B) and C)
F) C) and D)

Question 17

The primary function of the periodontal ligament is to do which of the following?

Accepted Answer

A)   Support the teeth.
B)   Provide nutrition.
C)   Transmit neural input.
D)   Protect the cementum.E) A) and B)
F) C) and D)

Question 18

Interstitial spaces contain _______ _______ and nerve trunks that maintain the vitality of the periodontal ligament (PDL).

Accepted Answer

The answer of Interstitial spaces contain _______ _______ and nerve...

Question 19

Cementoblasts repair resorbed cementum.

Accepted Answer

A) True 
 B)False

Question 20

The overall general health of an individual affects the health of the periodontium.

Accepted Answer

A) True 
 B)False  True

Exam 11: Periodontium: Periodontal Ligament

The periodontal ligament is thinnest in the midroot zone.

Correct AnswerverifiedShow Answer

Receptors and nerves located in the periodontal ligament transmit information regarding pressure and mandibular position.

Correct AnswerverifiedShow Answer

Which change is associated with the aging of cementum and alveolar bone?

Correct AnswerverifiedShow Answer

The periodontal ligament (periodontium) has a width of _________ mm.

Correct AnswerverifiedShow Answer

______________ create and destroy collagen fibers,as needed.

Correct AnswerverifiedShow Answer

Which of the following is found on the surface of cementum?

Correct AnswerverifiedD

Which of the following best defines epithelial rest?

Correct AnswerverifiedShow Answer

Fibroblasts are most concentrated in the _______ _________.

Correct Answerverifiedperiodontal ligament

Macrophages are normally present in the periodontal ligament.

Correct AnswerverifiedShow Answer

Epithelial rests always occur along the root surface.

Correct AnswerverifiedShow Answer

Which arises from the dental follicular tissue?

Correct AnswerverifiedShow Answer

List the five dentoalveolar fibers of the periodontal ligament.

Correct AnswerverifiedApical,horizontal,ob...View AnswerShow Answer

Cemental spikes occur with excessive deposition around depleted fiber bundles.

Correct AnswerverifiedShow Answer

The periodontal ligament performs which secondary function?

Correct AnswerverifiedShow Answer

The most important function of the periodontal ligament is to sense movement.

Correct AnswerverifiedShow Answer

The jaw jerk reflex is a test for which structure?

Correct AnswerverifiedShow Answer

The primary function of the periodontal ligament is to do which of the following?

Correct AnswerverifiedShow Answer

Interstitial spaces contain _______ _______ and nerve trunks that maintain the vitality of the periodontal ligament (PDL).

Correct AnswerverifiedShow Answer

Cementoblasts repair resorbed cementum.

Correct AnswerverifiedShow Answer

The overall general health of an individual affects the health of the periodontium.

Correct AnswerverifiedTrue

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D

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Fibroblasts are most concentrated in the _ ___.

Correct Answer
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periodontal ligament

Correct Answer
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Apical,horizontal,ob...
View 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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Interstitial spaces contain _ _ and nerve trunks that maintain the vitality of the periodontal ligament (PDL).

Correct Answer
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Correct Answer
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Correct Answer
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True