Chemistry of Dental Hard Tissues

Question 1

Demineralisation of tooth tissue can occur by acids from what

Answer 1

Caries
Gustatory acids (reflux)
(apparently erosion but i swear this aint acids bruh)

Question 2

Loss of tooth minerals can happen with tooth wear, give examples of tooth wear

Answer 2

Attrition
Abfraction
Abrasion

Question 3

Caries form by a multifactorial process, name some of these factors

Answer 3

Diet
time
Plaque - tooth surface
Pellicle - oral bacteria

Question 4

What is the formula for Calcium Hydroxyapatite

Answer 4

Ca10(PO4)6(OH)2

Question 5

What is the critical pH

Answer 5

The pH at which saliva ceases to be saturated with respect to calcium and phosphate
Because the calcium and phosphate combine with the Hydrogen ions and remove them from the solution

Question 6

Name some components of saliva

Answer 6

• Calcium and phosphate ions
• Calcium binding proteins
• Hydroxyapatite binding proteins
• water

Question 7

Name some components of enamel

Answer 7

• Calcium and phosphate
• Calcium binding proteins
• Hydroxyapatite binding proteins
• water