Comparative Evaluation of Glass Ionomer and Resin-Based Fissure Sealants on Newly Erupted Permanent First Molars: A 24-Month Randomized Clinical Trial

Inclusion Criteria: * Children aged 6-7 years * Children who are systemically healthy and classified as ASA I and II16 * Children whose parents and themselves have agreed to attend the study and follow-up visits throughout the study period * Children who have established oral hygiene habits Exclusion Criteria: * Children whose caregivers did not sign the informed consent form, and patients who wished to withdraw or for whom the treatment protocol was not properly followed. * Children who have restorations, cavitated surfaces or developmental defects and hypoplasia on the permanent first molar teeth to be treated. * Medically compromised and children who need special treatment. * History of adverse reactions to any restorative materials.