Saldarriaga-Molina, J. R., Mazo-Turizo, M. P., Posada-Escalante, A., Zapata-Martínez, W., & Valdés-Cuartas, D. E. (2009). Digital morphometric analysis of root changes in upper incisors of young patients during eighteen months of orthodontic treatment. Revista Facultad De Odontología Universidad De Antioquia, 19(2), 38–53. https://doi.org/10.17533/udea.rfo.2227