2026. REMINERALIZATION EFFICACY OF 1450 PPM SODIUM FLUORIDE ON A GROUP OF EARLY-STAGE CARIOUS PERMANENT TEETH IN CHILDREN AGED 6-15 YEARS ON NGOC VUNG ISLAND QUANG NINH PROVINCE IN 2025. Vietnam Journal of Community Medicine. 67, 5 (May 2026). DOI:https://doi.org/10.52163/yhc.v67i5.5179.