Dental decay usually begins in the grooves of the permanent teeth. Sometimes a toothbrush cannot reach these deep grooves and remove the food debris and germs.
Sealants on permanent molars reduce the risk of cavities by 80%.
A fissure sealant is a liquid coating which is painted on the chewing surfaces of the back teeth. They fill the grooves and makes the fissures smooth and which enables to clean and remove the food and brush your teeth effectively.
The first permanent back teeth comes around 5-7 yrs of age, the second permanent teeth comes around 12 yrs of age, these are the most common teeth which gets fissure sealants
The dentist cleans the tooth, applies a gel to prepare the tooth, then sealant is applied which hardens within minutes.