Sodium fluoride applied topically after tooth eruption reduces caries by inhibiting demineralisation and promoting remineralisation of the tooth surface. It is effective on both enamel and exposed dentine.
There is a clinically-proven dose-dependent relationship between the level of fluoride in a daily toothpaste and the degree of clinical anti-caries efficacy.
1
The longer the duration of topical fluoride application, the greater the anti-caries benefit.
Results of a clinical study assessing the efficacy of Colgate Duraphat 5000ppm fluoride toothpaste for at home use, found that it resulted in the hardening of:
- 54.9 per cent of primary carious lesions on roots after three months2
- 76.1 per cent of primary carious lesions on roots after six months2