An alternative method that has been gaining popularity in recent years is the use of a fluoride varnish. Evidence has shown that fluoride varnish is effective for reducing caries in high risk ...

The varnish would be added to the teeth by a dentist ... between five and 10 years of age have experienced decay in their baby teeth, while around 30 per cent of children aged 6 and 14 years ...

So, fluoride helps make the tooth stronger. And it prevents the growth of those cavity-causing bacteria. Scientists have been ...