Anggraini, Laelia Dwi, S. Sunarno, Rinaldi Budi Utomo, and Dibyo Pramono. “Space Maintainer ‘Y model’ As a Preventive Orthodontic Treatment for Paediatric Patients: A Case Report”. Dental Journal 54, no. 2 (June 3, 2021): 102–107. Accessed June 26, 2025. https://e-journal.unair.ac.id/MKG/article/view/24263.