COMPARATIVE STUDY OF THE EFFECTIVENESS OF LEAFLET AND BOOKLET EDUCATIONAL MEDIA ON ORAL HYGIENE KNOWLEDGE AMONG FOURTH AND FIFTH GRADE STUDENTS AT SDN 03 TUMPUK TANGAH  SAWAHLUNTO CITY. OPTIMAL [Internet]. 2025 Oct. 31 [cited 2026 Feb. 12];2(2). Available from: https://proceedings.nuansafajarcemerlang.com/index.php/ico/article/view/169