Dental sealants act as a barrier, protecting the teeth against decay-causing bacteria.  The sealants are usually applied to the chewing surfaces of the back teeth (premolars and molars) where decay occurs most often.  They are usually placed on permanent back teeth immediately after they erupt in your child's mouth.

Thorough brushing and flossing help remove food particles and plaque from smooth surfaces of teeth, but toothbrush bristles cannot reach all the way into the depressions and grooves to extract food and plaque.  Sealants protect these vulnerable areas by "sealing out" plaque and food. Sealants are a valuable aid in protecting children's and adolescents' teeth, especially at an age when brushing and good food choices are not a top priority.