contents of toothpaste Flashcards
1
Q
what are the main contents of toothpaste?
A
abrasives humectants detergents flavouring agents binding agents preservative desensitising agents
2
Q
what are some abrasives?
A
calcium pyrophosphate dicalcium phosphate insoluble sodium metaphosphate calcium carbonate hydrated alumina silicone dioxide zirconium silicate
3
Q
what content of toothpaste should be abrasives?
A
20-40%
4
Q
name some humectants
A
glycerol
sorbitol
polypropylene glycol
5
Q
what % should be humectant?
A
10-30%
6
Q
what % should be detergent?
A
1-2%
7
Q
name some detergents
A
sodium lauryl sulphate
sodium monofluorophosphate
8
Q
what do detergents do?
A
lower surface tension and loosen plaque
aid foaming action
9
Q
what do abrasives do?
A
cleaning and polishing agents
10
Q
what do humectants do?
A
retain moisture
11
Q
what % should be flavouring agents?
A
1-5%
12
Q
what do binding agents do?
A
prevent separation of components
13
Q
what are binding agents?
A
alginates or gums
14
Q
what do preservative do?
A
prevent bacterial growth
15
Q
name some preservatives
A
alcohols
benzoates
formaldehydes
