L24. Solubility of tooth mineral Flashcards
1
Q
Which is higher : mineral content in teeth or bone?
A
Teeth
2
Q
Which has a higher mineral content, enamel or dentine?
A
Enamel.
3
Q
What is the mineral found in teeth?
A
Hydroxyapatite.
4
Q
What does hydroxyapatite give teeth?
A
Their rigidity
5
Q
What is the consequence of a rise in H+ in the mouth?
A
Equilibrium shifts to increase calcium phosphate solubility
6
Q
What is the consequence of a rise in calcium or phosphate in the mouth?
A
Equilibrium shifts to inhibit solubilisation and promote remineralisation.
7
Q
How is fluorapatite created?
A
When OH- ions are replaced with F+ ions. It is more stable so less soluble in acid.
