What are dental sealants? Dental sealants are a preventative dental treatment made from a thin plastic material. This material is typically applied to the chewing surface of molars and premolars which have a higher likelihood of cavities, especially at younger ages. The sealants act as a barrier between the teeth and cavity causing bacteria essentially ‘sealing out’ plaque, food and acids in the mouth. How are dental sealants applied? The tooth will be cleaned and prepared to receive the sealant, then the ultra-thin material is ‘painted’ onto the tooth enamel. This can be done by the dentist, dental assistant, or dental hygienist. Once applied, the sealant bonds with the tooth and hardens. Sometime a curing light is used to help speed up the curing time...