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Patient Care 3 > Dentinal hypersensitivity > Flashcards

Dentinal hypersensitivity Flashcards

1
Q

dentinal hypersensitivity

A

short, sharp pain when stimulus reaches exposed dentin

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2
Q

stimulus (4)

A

Thermal
Tactile
Chemical
Evaporative

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3
Q

DENTIN
(3)

A

Organic Components
Inorganic Components
Dentinal Tubules

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4
Q

dentinal tubules
Run from pulp to the outer dentinal surface
(2)

A

Can either be open or plugged
Number of tubules varies

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5
Q

dentinal tubules
Contain Tomes fibers
(1)

A

Extend into the dentinal tubules from the odontoblasts that
communicate with the pulp

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6
Q

dentinal tubules
Three types of nerve fibers
(3)

A

A-delta
A-beta
C

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7
Q

Hypersensitive Dentin
(2)

A
  • Tubules open to cavity
  • Large number of tubules
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8
Q

Smear Layer
(2)

A
  • Deposit of Salivary Proteins
  • Debris from toothpaste and other
    matter
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9
Q

brannstroms hydrodynamic theory

A

Stimuli are transmitted to the pulp surface due to
the movement of fluid or semi-fluid within open
dentinal tubules

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10
Q

etiology of dentinal hypersensitivity (2)

A

Gingival
Recession

Enamel
Loss

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11
Q

prevalence of dental erosin (3)

A

▪Occurs in all age ranges
▪ Higher incidence in 20-40 year old age group
▪Females more prone

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12
Q

erosin
Common site of occurrence - (2)

A

buccal and labial surfaces

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13
Q

erosin
Areas effected:
(3)

A
  • Canine/premolar
  • Incisors
  • 2nd pre-molars and molars
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14
Q

diagnosis
one of exclusion (3)

A

Dental
Caries
Fractured
Teeth
Fractured
Restorations

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15
Q

in Office
(5)

A
  • Varnishes/Precipitates
  • Primers
  • Placement of restorations
  • Composite resin-based
  • Restorations with glass ionomer
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16
Q

At Home
(1)
* Mode of action:
(2)

A
  • Dentifrices, Gels, Rinses
  • Interference of action potential
  • Tubule Occlusion
17
Q

in office tx
(3)

A

Glutaraldehyde/HEMA based agents
Significantly reduce hypersensitivity immediately
after treatment
Reduces dentin permeability

18
Q

5% Sodium Fluoride Varnish
(2)

A

Forms a barrier over exposed dentin
Relief provided by calcium fluoride deposits

19
Q

MI paste (2)

A

Recaldent (CPP-ACP)
Casein phosphopeptide – amorphous calcium
phosphate

20
Q

MI paste
Mechanism of action:

A
  • replaces calcium and phosphate ions
21
Q

MI paste
Use:
(3)

A
  • apply with a prophy cup
  • at home use
    -applied after brushing teeth*

Patient Care 3 (25 decks)

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