Oral hygiene, the method of keeping the mouth and teeth clean in order to avoid dental problems, is an example of dental treatment. Dental Varnish is a temporary fluoride coating that is applied to the surfaces of teeth and is intended to remain on the teeth for many hours. One type of fluoride treatment is dental varnishing. It entails adding a fluoride-rich varnish to the enamel, which strengthens it and protects it from caries. The procedure is fast and painless. It can be used to avoid caries in both adults and infants.