Pérez, M. A.; Neira, Álvaro; Alfaro, J.; Aguilera, J.; Alvear, P.; Fierro-Monti, C. Orthodontic Treatment Needs According to the Dental Aesthetic Index in 12-Year-Old Adolescents, Chile. Rev Fac Odontol Univ Antioq 2014, 26, 33-43.