It seems to always start with a little decay. Dental sealants are a proactive approach to halting decay in its tracks. Using a tooth-colored acrylic, Dr. Staller will apply the sealant to the surface of the tooth, “sealing” the deep grooves of the enamel, adding a protective barrier to areas of the tooth that regular brushing and flossing can’t reach. Sealants are quick to apply and are durable – many last several years under regular use before reapplication is required.