Everyone, no matter the age can be affected by tooth decay and one of the most effective methods for preventing tooth decay in children to mature adults is a dental sealant application. A dental sealant is a clear/white gel that is coated over the problem area to prevent plaque and bacteria from gathering. This is usually in the pits and fissures of the teeth (which is why you might see that dental sealants are referred to as ‘fissure sealants’ or ‘pit sealants’). These areas are grooves on the crown of your tooth that allow the teeth to grind and chew.