Sealants are preventive treatment options available especially for children and most commonly practiced all over the world. A tooth doesn't have a flat biting surface, always there are pit and fissures which are inaccessible to brush bristles. Hence, thin materials are flowed into these pit & fissures and subsequently made easier accessible to brushing and self cleansing. This is most commonly done on the posterior teeth i.e. molars and premolars.