One of the methods of preventing cavities from developing in the pits and fissures is to seal them with a special varnish called a pit and fissure sealant.
The top surfaces of your teeth – where the chewing takes place – aren’t smooth and flat. They are criss-crossed with tiny hills and valleys – called pits and fissures. These are places where the plaque can build up safe from your toothbrush and dental floss. Some of the pits and fissures are so narrow that even a single bristle from your toothbrush can’t get deep enough to clean them out.
One of the methods of preventing the cavities from developing in the pits and fissures is to seal them with a special varnish known as a pit and fissure sealant.
This is specially recommended in children as they find it difficult to keep their teeth clean by the regular practices of brushing and in adults whose teeth have deep grooves and pits with an intention to prevent the start of decay.