This ion is present in low doses in our drinking water and table salt, it is highly beneficial for our teeth as it strengthens the outer or enamel layer thereby preventing dental decay. This is a highly recommended preventive dental therapy for children worldwide. We at Dr Kandhari’s skin and dental clinic recommend putting children who are at high risk of dental caries or have rampant caries on a semi- annual or six monthly fluoride regime. In this after cleaning and polishing the teeth either a fluoride gel or varnish is applied on all the surfaces for 2 to 5 minutes followed by rinsing. If done regularly this treatment can greatly reduce caries risk and prevent cavities.