The permanent molars are the most common teeth on which dental sealants are placed. In many cases, it is nearly impossible for children to clean the tiny deep and narrow grooves on the chewing surface of their back teeth. This may result in an accumaulation of plaque and bacteria, and a cavity may eventually form. When a sealant is applied, these grooves and crevices on the biting surface of the tooth disappear as they are filled with a liquid that is flowed into grooves and then hardened into a (BPA-free) plastic. When the grooves are sealed, food, plaque and bacteria can no longer get stuck in them, and cavities on the chewing surfaces of the teeth are much less likely to occur.
Sealants are a clear or shaded plastic coating applied to the teeth to help keep them cavity-free. Sealants fill in the grooved and pitted surfaces of the teeth, which are hard to clean, and shut out food particles that could get caught, causing cavities. Fast and comfortable to apply, sealants can effectively protect teeth for many years.