Orawan SuwansinghaPraphasri RirattanapongBangpakong HospitalMahidol University2018-06-112018-06-112012-11-05Southeast Asian Journal of Tropical Medicine and Public Health. Vol.43, No.3 (2012), 808-813012515622-s2.0-84868140691https://repository.li.mahidol.ac.th/handle/20.500.14594/14540The objective of this study was to measure the effectiveness of fluoride varnish as a public health intervention to prevent caries on partially erupted first and second permanent molars among 6-11 year old children at high risk for caries. In a six-month clinical trial, 105 children were randomly divided into a fluoride varnish (Duraphat®) group (117 molars) or a control group (117 molars). The chisquare test used to compare caries occurrence in each group with a 95% level of confidence (p < 0.05) at the intervals of 3 months. Compared to control, fluoride varnish resulted in 79% and 77.5% caries reduction in partially erupted permanent molars at 3 and 6 months, respectively. There were statistically significant differences in caries progression between the groups at 3 and 6 months. Fluoride varnish significantly reduced carious lesions in partially erupted molars at six months among high caries risk children.Mahidol UniversityMedicineArticleSCOPUS