Aetiology of Dental Caries - fluoride Flashcards
What has a higher fluoride concentration; plaque or saliva?
plaque
What does fluoride favour the precipitation of?
calcium and phosphate
What does fluoride encourage the formation of?
calcium hydroxyapatite and fluorapatite
Can fluoride in plaque inhibit bacterial metabolism?
yes
What is the effect of carbonates incorporations into crystal?
promote carious attack
How does saliva buffer acid?
contains concentrated calcium and phosphate ions
What happens bertween pH drops?
remineralisation slowly occurs
When is the plaque fluid more undersaturated?
lower pH, increased sugar consumption
What happens when the plaque fluid is undersaturated compared to hydroxyapatite?
the greater the tendency for dissolution of the enamel apatite
What are the demineralisation factors?
What are the remineralisation factors?