tooth composition Flashcards
1
Q
what do teeth consist of?
A
calcium phosphatase crystals held together by a protein matrix
2
Q
what is the mineral component in teeth known as?
A
hydroxyapatite
3
Q
what is tooth erosion?
A
the direct effect of acid in the diet on our teeth
4
Q
how to do chelating agents aid tooth decay?
A
they bind to calcium ions preventing remineralsation
5
Q
in which way does fluoride reduce caries?
A
it stimulates remineralisation, reduces enamel solubility at low pH, inhibits baterial metabolism of carbohydrates
6
Q
when fluoride combines with hydroxyapatite it forms a complex known as?
A
fluoroapatite
7
Q
why is fluoroapatite more effective than hydroxyappatite?
A
fluoride ion is smaller than the hyroxyide ion so it fits better into the crystal, rendering it less soluble in acid
