Comparative efficiency of Class II malocclusion treatment with the pendulum appliance or two maxillary premolar extractions and edgewire appliances - Pinzan-Vercelino, Célia Regina Maio; Janson, Guilherme dos Reis Pereira; Pinzan, Arnaldo; Almeida, Renato Rodrigues de; Freitas, Marcos Roberto de; Freitas, Karina Salvatore de (European Journal of Orthodontics, 2009)