The most common place to paint sealants is on back teeth since they are often irregular. They can also be very hard to reach, even if you brush your teeth regularly. We use it more on children though we do perform sealants on adults too!
When we apply a dental sealant, we paint a plastic coating on top of your teeth. This makes your teeth smooth getting rid of the rough edges, depressions, and grooves that are commonly found on teeth. It is essentially a protective coating against tooth decay and cavities.