(4) Dentini-pulpal Complex - Dentine Sensitivity Flashcards
1
Q
What are examples of food related sensitivity of dentine?
A
Thermal (hot/cold)
Osmotic changes (sugar in diet)
2
Q
How can dentine be sensitive?
A
Nerve endings in dentine
Odontoblastsic processes act as nerve ending and they sense the pain
Movement of fluids within tubules depolarise nerve endings (most accepted theory)
3
Q
What is the hydrodynamic theory?
A
Fluid movement within the tubules (hydrodynamic theory)
4
Q
What does this stain highlight?
A
Nerves and nerve plexus inside tubules
5
Q
What are stimuli which cause outward movement of fluids in the tubule?
A
Heat
Osmotic pressure
Drying
6
Q
What causes change in osmotic pressure?
A
Sugary food or drinks
7
Q
What causes inward movement of fluid?
A
Cold stimuli
8
Q
Why is there higher sensitivity within the DEJ?
A
Tubular branching
