Diagnostic assessment of tooth maturation of the mandibular second molars as a skeletal maturation indicator: a retrospective longitudinal study - Oyonarte, Rodrigo; Sánchez-Ugarte, Fernando; Montt, Juan; Cisternas, Alejandra; Morales-Huber, Rolando; Ramirez-Lobos, Valeria; Janson, Guilherme (American Journal of Orthodontics and Dentofacial Orthopedics, 2020)