How do sealants help prevent decay?

When our teeth are developing, depressions and grooves form in the chewing surfaces of our tooth enamel. They are impossible to keep clean because the bristles of a toothbrush can’t reach into them. As a result, these depressions and grooves are snug places for plaque and bits of food to hide. By forming a thin covering over the depressions and grooves, sealants keep out plaque and food, and as a result, decrease the risk of decay.

How are sealants applied?

Each tooth takes only a few minutes to seal. The teeth being sealed are first cleaned and then the chewing surfaces are conditioned to help the sealant adhere to the tooth. The sealant is then “painted” onto the tooth enamel, where it bonds directly to the tooth and hardens. Often, a “curing” light is used to help the sealant harden.

How long do sealants last?

When the sealant is applied, finger-like strands penetrate the depressions and grooves of the tooth enamel. The sealant can’t be seen with the naked eye, but the protective effect of these strands continue. As a result, it may be several years before another application of sealant is needed.