Herlinawati. The Effectiveness of Education Through Videos and Lectures About Brushing Teeth Against Plaque Accumulation in Elementary School Students in Medan Sunggal Sub-District. Int. J. of Allied Med. Sci. and Clin. Res. [Internet]. 2020 Aug. 15 [cited 2026 Apr. 30];8(2):155-63. Available from: https://ijamscr.com/ijamscr/article/view/843