Emmelia E, Simaremare SA. Knowledge about Maintaining Dental and Oral Hygiene Before and After Counseling Using Flipchart Media for Class IV Students at SDN 060825 Medan Area District. DHeJA [Internet]. 2023 Dec. 15 [cited 2024 Dec. 12];2(2):41-4. Available from: https://journal.poltekkesaceh.ac.id/index.php/dheja/article/view/489