The enamel of the chewing surface of teeth has distinct, organic creases and channels called fissures that are located between the cusps. During the sealing process, healthy teeth's fissures and other anatomical depressions are filled with adhesive materials to create a barrier that protects against external cariogenic causes. Indications for preventive procedures and sealing for erupting teeth with embryonic enamel are as follows, as determined by enamel fissure electrometry (μA) readings: EMI is low, with a maximum of 8 μA. hygiene precautions and surveillance; medium EMI (9 to 20 μA): Hygiene measures, fissure closure, and a regimen of fluoride- and calcium phosphate-containing preparations; high EMI (up to 20 μA) Hygiene measures, a course of fluoride and calcium phosphate preparations, fissure widening, and preventive filling. The high prevention results that are obtained through sealing are the result of two primary functions of sealants 1. The implementation of a tangible barrier on the tooth surface to safeguard against cariogenic factors. 2. Enamel remineralisation in the fissure area, provided that the sealant contains active fluoride ions. The idea of fissure sealing is to protect teeth from detritus, which is a precursor to caries.