When a tooth is on its way to developing a cavity, a simple solution to protect the tooth from further damage is with the application of a dental sealant. Dental sealants are clear plastic coatings that are applied on the chewing surfaces of your teeth to prevent cavity formation. The procedure is quick and can be done immediately after diagnosis, since there is no drilling of enamel or dentin involved. Sealants are usually undetectable to the naked eye, which is a great benefit if you want people to notice your smile and not your dental work. As long as you continue to practice proper dental hygiene and visit your dentist regularly, the applied sealant should last between 5 to 10 years before reapplication is necessary.