In the 1970s, dentistry was essentially a practice of “drill, fill and bill” because of cavities. The increased use of fluorides, however, led to a decline in the amount of tooth decay people developed.
Brushing your teeth every day is great, but even the best oral hygiene habits can produce wear on the teeth and produce cavities.
Dental sealants act as a barrier, protecting the teeth against decay-causing bacteria. The dental sealants are usually applied to the chewing surfaces of the back teeth (premolars and molars) where tooth decay occurs most often.