Predictable drill-free screw positioning with a graduated 3-dimensional radiographic-surgical guide: a preliminary report - Barros, Sergio Estelita Cavalcante; Janson, Guilherme dos Reis Pereira; Chiqueto, Kelly Fernanda Galvão; Janson, Marcos dos Reis Pereira; Freitas, Marcos Roberto de (American Journal of Orthodontics and Dentofacial Orthopedics, 2009)