Tatiyanupanwong P. Caries Prevention of Permanent First Molars After 30 months Application of Pit and Fissure Sealant in First Grade Primary School Children in Krathum Bean, Samut Sakhon. J Health Sci Thai [Internet]. 2017Dec.12 [cited 2025Dec.5];17(2):274-8. Available from: https://thaidj.org/index.php/JHS/article/view/984