Fluoride is a natural mineral found in food and water which helps to strengthen teeth and prevent tooth decay, by making the tooth more resistant to acid attacks from plaque and sugars. If fluoride is lacking from the diet, the teeth will be prone to tooth decay and cavities.
The hard outer surface of the tooth is called ‘enamel’, which contains mineral crystals. Everyday plaque bacteria and sugars in the mouth attack the enamel causing it to weaken. This process is called ‘demineralisation’. Minerals such as fluoride, calcium and phosphate from the food and water we consume and the toothpaste we use, helps to strengthen the enamel. This process is called ‘remineralisation’. Fluoride speeds up the remineralisation process.