Anggraini, L. D., Sunarno, S., Utomo, R. B. and Pramono, D. (2021) “Space maintainer ‘Y model’ as a preventive orthodontic treatment for paediatric patients: a case report”, Dental Journal, 54(2), pp. 102–107. doi: 10.20473/j.djmkg.v54.i2.p102-107.