Cephalometric evaluation of the eruption guidance appliance in class II, division 1 treatment - Janson, Guilherme dos Reis Pereira; Pereira, Ana Carla Junqueira; Bergensen, Earl O.; Henriques, José Fernando Castanha; Pinzan, Arnaldo; Almeida, Renato Rodrigues de (Journal Clinical of Orthodontics, 1997)