Lapying, Phenkhae, Prapa Sang-la, Pikul Sontham, and Voravith Chaimuang. “Cost-Effectiveness of 12-Month Pit-Fissure Sealant on First Molars”. Journal of Health Science of Thailand 18, no. 6 (January 25, 2018): 826–835. Accessed December 5, 2025. https://thaidj.org/index.php/JHS/article/view/1864.