Rismayani, Lina, Gita Indartri, and Samjaji Samjaji. “The Use of a Special Toothbrush for Dental and Oral Hygiene in Children With Mild Mental Retardation”. Journal Center of Excellent : Health Assistive Technology 1, no. 1 (March 21, 2023): 7–11. Accessed November 26, 2024. https://ejournal.poltekkesjakarta1.ac.id/index.php/jchat/article/view/991.