Caries 2 Flashcards
1
Q
what is the acidogenic theory
A
two stage process which involves the decalcification of enamel and then the destruction of dentine
2
Q
what is the Proteolytic Theory
A
The organic (protein) portion of the enamel or dentine is destroyed by proteolytic enzymes from plaque bacteria
3
Q
The Proteolytic Chelation Theory
A
According to this theory the protein element of the tooth is broken down into amino acids (organic matrix) by the proteolytic enzymes in bacterial plaque
4
Q
what is the Stephan curve?
A
the effect that sugar has on the PH of plaque bacteria in the mouth
5
Q
demineralisation is caused by?
A
repeated falls of PH in the mouth
6
Q
Non-fluoridated enamel will start to demineralise at pH?
A
5.5
7
Q
Fluoridated enamel will start to demineralise at pH
A
4.5
