Tooth Sealants refer to a plastic which a dentist bonds into the grooves of the chewing surface of a tooth as a means of helping to cavities. In many cases, it is near impossible for children to clean the tiny pits and grooves on the chewing surfaces of their teeth. When a sealant is applied, the surface of the tooth is somewhat flatter and smoother. There are no longer any places on the chewing part of the tooth that the bristles of a toothbrush can’t reach and clean. Since plaque can be removed more easily and effectively, there is much less chance that decay will start.