Silver Diamine Fluoride is a revolutionary technique used to treat cavities in a quick, easy and painless way. How does it work? We simply brush the silver diamine fluoride on the top of the tooth while it is dry. The silver diamine fluoride then works to put a stop to the decay by disinfecting and hardening the cavity. This treatment is completed in just a few minutes and requires no drills or needles. While silver diamine fluoride might cause slight discoloration to the treated area of the tooth, it is a safe and painless procedure for children of all ages.