5317524
Question 1
Question
When do odontoblasts and ameloblasts appear?
Answer
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cap stage
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bell stage
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bud
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initiation
Question 2
Question
Which of the following is true
Answer
-
Plexus of Rashkow is the dense network of myelinated nerve fibers
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The Zone of Weil is devoid of capillaries and nerves
-
Pulp has propioception
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Pulp contains nociceptors, unmyelinated mechano-receptors, and myelinated C fibers
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Thin, unmyelinated fibers with a neurolemma control blood flow and pressure at the dental pulp
Question 3
Question
Which of the following are principle fibers?
Answer
-
Horizontal group
-
Circular group
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Transeptal group
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all of the above
-
Horizontal and transeptal
Question 4
Question
Odontoblasts are derived from ectomesenchymal cells. In life, they are later replaced by undifferentiated stem cells of the pulp.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 5
Question
Which of the following is false
Answer
-
β-catenin is required in odontoblasts for tooth root formation
-
Lateral canals can be found in the apical 1/3rd of the root
-
Odontoblasts are more columnar at the root
-
There are more dentinal tubules in the crown
-
Dentinal tubules are more innervated in the crown
Question 6
Question
After placement of a dental implant, which of the following fibers will be present after healing?
Answer
-
dentogingival and circular
-
alveologingival and dentoperiosteal
-
circular and transeptal
-
circular and alveologingival
-
alveolar crest and circular
Question 7
Question
Most dentin matrix secretion is when .25-.5mm of dentin thickness remains. TGF B1 and TGF B3 are required molecular stimuli for secretion.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 8
Question
Which of the following is false about pulp circulation and blood flow?
Answer
-
Pulp flow is increased by inflammation
-
Pulp flow is increased by CGRP and SP
-
Pulp flow is decreased by epinephrine
-
Pulp flow is increased by initiation of pulpal necrosis
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Pulp flow is decreased by orthognathic surgery
Question 9
Question
Odontoblasts are NOT...
Answer
-
Pseudostratified in pulp chamber
-
Columnar at the pulp chamber
-
Cuboidal at the radicular pulp
-
Squamous at the radicular pulp
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a single layer at the junction of the pulp and the dentin
Question 10
Question
Which of the following is false?
Answer
-
Unmyelinated C fibers are pain fibers with a high threshold
-
A beta are large, myelinated, and have a low-threshold
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A delta are small and have a high threshold.
-
A beta feel innocuous toch and mechanical sensation
-
A delta feels pain, cold, some heat
Question 11
Question
Which of the following is false?
Answer
-
Irreversible pulpitis is often predicted by spontaneous pain
-
Best predictor of post-endodontic treatment plan is pre-treatment pain
-
Local anesthetics do not work as well when dental pulp is inflamed
-
The best test to determine vital versus necrotic pulp is heat followed by electric pulse.
-
Irreversible pulpitis can be asymptomatic
Question 12
Question
Central sensitization can result in referred pain that affects an entire arch. This can be due to both an increased release of neurotransmitters and increased response to neurotransmitters.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 13
Question
The cell bodies of the nerves of the pulp can be found in the trigeminal ganglia. The main mediator of pulpitis is peripherally located, unmyelinated C-fibers.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
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