Although thorough brushing and flossing removes most food particles and bacteria from easy to reach tooth surfaces, they do not reach the deep grooves on chewing surfaces of teeth. More than 75 percent of dental decay begins in these deep grooves (called pits and fissures). Toothbrush bristles are often too large to clean most of these areas, thus sealants play an important role.
A sealant is a thin plastic coating that covers and protects the chewing surfaces of molars, premolars, and any deep grooves or pits on teeth. Sealant material forms a protective, smooth barrier covering natural depressions and grooves in the teeth, making it much easier to clean and help keep these areas free of decay.