The chewing surfaces of children's teeth are susceptible to decay because children have a harder time cleaning the tiny grooves and pits on certain teeth, and fluoride is not necessarily as effective on the teeth in this area. So although you child may brush and floss carefully, food and bacteria still can build up in the depressions, leaving a higher risk for decay.

Other patients also can benefit from sealant placement, such as those who have existing grooves and pits that are susceptible to decay.