Rismayani L, Indartri G, Samjaji S. The use of a special toothbrush for dental and oral hygiene in children with mild mental retardation. jchat [Internet]. 2023Mar.21 [cited 2024Jul.6];1(1):7-11. Available from: https://ejournal.poltekkesjakarta1.ac.id/index.php/jchat/article/view/991