Anggraini, Laelia Dwi, S. Sunarno, Rinaldi Budi Utomo, and Dibyo Pramono. 2021. “Space Maintainer ‘Y model’ As a Preventive Orthodontic Treatment for Paediatric Patients: A Case Report”. Dental Journal 54 (2):102-7. https://doi.org/10.20473/j.djmkg.v54.i2.p102-107.