49. KNOWLEDGE AND PRACTICE OF ORAL HEALTH CARE OF STUDENTS AND PARENTS AT CHAU THANH TOWN PRIMARY SCHOOL, CHAU THANH DISTRICT, TRA VINH PROVINCE IN 2025. YHCĐ [Internet]. 2025 Aug. 22 [cited 2026 Sept. 9];66(CĐ11-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/2845