Dentinal hypersensitivity

Question 1

dentinal hypersensitivity

Answer 1

short, sharp pain when stimulus reaches exposed dentin

Question 2

stimulus (4)

Answer 2

Thermal
Tactile
Chemical
Evaporative

Question 3

DENTIN
(3)

Answer 3

Organic Components
Inorganic Components
Dentinal Tubules

Question 4

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

Answer 4

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

Question 5

dentinal tubules
Contain Tomes fibers
(1)

Answer 5

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

Question 6

dentinal tubules
Three types of nerve fibers
(3)

Answer 6

A-delta
A-beta
C

Question 7

Hypersensitive Dentin
(2)

Answer 7

• Tubules open to cavity
• Large number of tubules

Question 8

Smear Layer
(2)

Answer 8

• Deposit of Salivary Proteins
• Debris from toothpaste and other
  matter

Question 9

brannstroms hydrodynamic theory

Answer 9

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

Question 10

etiology of dentinal hypersensitivity (2)

Answer 10

Gingival
Recession

Enamel
Loss

Question 11

prevalence of dental erosin (3)

Answer 11

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

Question 12

erosin
Common site of occurrence - (2)

Answer 12

buccal and labial surfaces

Question 13

erosin
Areas effected:
(3)

Answer 13

• Canine/premolar
• Incisors
• 2nd pre-molars and molars

Question 14

diagnosis
one of exclusion (3)

Answer 14

Dental
Caries
Fractured
Teeth
Fractured
Restorations

Question 15

in Office
(5)

Answer 15

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

Question 16

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

Answer 16

• Dentifrices, Gels, Rinses
• Interference of action potential
• Tubule Occlusion

Question 17

in office tx
(3)

Answer 17

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

Question 18

5% Sodium Fluoride Varnish
(2)

Answer 18

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

Question 19

MI paste (2)

Answer 19

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

Question 20

MI paste
Mechanism of action:

Answer 20

• replaces calcium and phosphate ions

Question 21

MI paste
Use:
(3)

Answer 21

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