The chewing surface of the tooth is not smooth but has criss-cross tiny projections and valleys that are called pits and fissures. These pits and fissures offer an ideal surface for plaque to accumulate and remain untouched even with toothbrushes and dental floss.

​

However, this can be avoided by the use of Pit & fissure sealant material on the tooth surface. This preventive treatment measure as the name suggests seals the rough grooves and pits of the tooth surface; which makes it smoother and thus easier to keep clean by simple home care brushing.