All About Dental Sealants
What It Is and Why You Need It A dental sealant is an extremely thin plastic material that is painted on the chewing surfaces of teeth to prevent tooth decay. The sealant works by acting as an extra protective layer over each tooth's natural enamel. This additional layer keeps out bacteria that would otherwise harm your teeth. Sealants are particularly useful on the back teeth since they are difficult to clean and are highly susceptible to decay.