Caries potential is directly related to shape & depth of the pit & fissures. Sealants are the effective caries protective agents to the extent they remain bond safe & their effectiveness should justify their routine use as a preventive measure.

Indications: - Deep retentive pits & fissures. - Patient with high risk of caries. - Stained pit & fissure with numerous appearance of decalcification. - No radiographic/clinical evidence of proximal caries