Pits and fissures of permanent tooth act as food accumilating areas and thus provide a enviornment for bacteria to strive and cause tooth decay. This pit and fissure selants help in prevention of caries occuring in tooth no tooth preparation is carried out for this procedure, the fissures are cleaned and the tooth is etched and sealents are applied, the sealents being weak in and will need peroidic recall every year, they act as barrier to prevenet food acumillation and bacterial proliferation and thus prevent intiation of caries

sealents can be used in adults who have increased risk of devoloping cavites, dentist is the ideal person for such a suggestion, sealents can be placed on teeth with early signs of decay,but once the decay decay has broken through enamel the tooth will need filling.