​​Fissures are the grooves that naturally occur on the biting surface of the teeth.  If the fissures are very deep and narrow, toothbrush bristles cannot fit inside to properly clean the tooth, leaving trapped food which attracts bacteria which eventually leads to tooth decay.

Fissure sealants are coatings that fill the fissures and protect the teeth from dental plaque and acids.  Treatment is painless and non-invasive with a coat of the sealant applied to the cleaned tooth forming a physical barrier.

While an intact fissure sealant offers excellent protection against decay on the treated surface, your dentist or therapist cannot guarantee that treatment will prevent decay on all tooth surfaces.