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Dental sealants, often known as pit and fissure sealants or just fissure sealants, are a preventative dental procedure. On the biting surfaces of teeth, there are recesses; back teeth have fissures, while certain front teeth have cingulum pits. Because food and germs stick in these pits and cracks and because they are difficult to clean, they are the most sensitive to tooth decay. Dental sealants are compounds that are placed in these pits and fissures to fill them in and provide a smooth, easy-to-clean surface. Dental sealants are typically applied as soon as the adult molar teeth emerge in children who are at a higher risk of tooth decay. Dental caries occurs when the balance between mineral loss and growth on a tooth surface is disrupted. Minerals are lost from the teeth due to bacteria in the mouth digesting foods and making acids, whereas the tooth obtains minerals from our saliva and fluoride present in the mouth.