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Neuroscience Exam 3 > 4 Tooth Pain > Flashcards

4 Tooth Pain Flashcards

1
Q

when is pain produced

A

when a stimulus is strong enough to trigger a neural respone

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2
Q

intensity, location and quality of pain differs due to ___

A

stimulus and the type of nerve fibers involved

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3
Q

what is the main complaint for those seeking dental treatment?

A

pain

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4
Q

where is CB #1 for V

A

trigem ganglion

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5
Q

where is CB #2 for V

A

Trigeminal nuclear complex: oralis and interporalis

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6
Q

where is CB #3 for V

A

contralateral VPM

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7
Q

where does the tract terminate

A

post central gyrus of parietal lobe

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8
Q

what type of stimuli for thermomechanical nociceptors

A

mechanical and thermal stimuli

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9
Q

what type of stimuli for polymodal nociceptors

A

thermal, mechanical, and chemicial stimuli

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10
Q

what nerve fibers are at the terminal ends of free nerve endings

A

A-delta
A-beta
C

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11
Q

what innervates dentin-pulp complex

A

myelinated A-delta
myelinated A-beta
unmyeliinated C
sympathetic fiberss

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12
Q

what regulate blood flow in the pulp

A

sympathetic fibers

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13
Q

are there parasympathetic fibers in the pulp

A

controversial, but most likely nah

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14
Q

how do fibers run in pulp?

A

run thru apical foramen and follow vascular supply

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15
Q

what fibers are at the pulp-dentin border in the coronal aspect of the pulp and pulp hornss

A

a-delta fibers

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16
Q

what form plexi known as plexus of Raschkow? where is it located?

A

a-delta fibers

located under odontoblast layer

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17
Q

what fibers terminate as free nerve endings between odontoblats

A

a-delta

18
Q

what fibers concentrate in the core of the pulp and apical layer and extend into the cell free zone beneath odontoblastic layer

A

C fibers

19
Q

what fibers are thought to function similarly to A-delta but are low threshold and more sensitive

A

a-beta

20
Q

order of fibers from most to least prominent

A

C > A-delta > A-beta

21
Q

location of lightly myelinated a-delta fibers

A

oral mucosa
ginigiva
PDL
pulp

22
Q

receptor characteristics of a-delta fibers

A

free nerve ending mechanothermal/mechanosensistive nociceptor

23
Q

receptor stimuli of a-delta fibers

A

responsive to intenses mechanical or mechanothermal stimuli

24
Q

function of a-delta fiber

A

fast, sharp localized pain

25
Q

location of c fiber (polymodal and silent)

A

oral mucosa
ginigiva
PDL
pulp

26
Q

receptor characteristics of C fiber

A

free nerve ending polymodal or silent nociceptor

27
Q

stimuli for c fiber (polymodal)

A

responsive to intense stimuli, includes thermal, mechanical and chemical mediators released during inflammation

28
Q

what type of fibers are small diameter and have fasts transmission

A

a-delta

29
Q

what type of fibers are thin diameter and slow transmission

A

c fibers

30
Q

function for c fiber (polymodal)

A

slow dull diffuse pain

31
Q

stimuli for c fiber (silent)

A

normally unresponive to noxious mechanical stimuli. Is recruited during inflammation

32
Q

function for c fiber (silent)

A

becomes sensitized; activated and responsive following inflammation

33
Q

where do a-delta and a-beta fibers directly transmit pain? what does this create?

A

thalamus

creates fast, sharp pain that is easily located

34
Q

what fibers respond to probing, drilling and hypertonic solutions (hydrodynamic theory)

A

a-delta and a-beta

35
Q

what fibers respond to rapid changes in temp

A

a-delta and a-beta

36
Q

what fibers are influenced by modulating interneurons before reaching thalamus

A

c fibers

37
Q

what fiber elicits a response to gradual temp changes

A

c fibers

38
Q

what fiber is responsible for referred pain which is a very common phenomenon in the oral cavity

A

c fibers

okane says to know this

39
Q

what type of pain may decrease the threshold of nociceptors

A

persistant pain

40
Q

___ can result in increased sensitivity seen in peripheral sensitization

A

persistent pain

Neuroscience Exam 3 (7 decks)

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