Comparison of the dentoskeletal and soft tissue changes with the cervical headgear and Jones Jig followed by fixed appliances in class II malocclusion patients: a retrospective study - Fontes, Fernanda Pinelli Henriques; Bellini-Pereira, Silvio Augusto; Aliaga-Del Castillo, Aron; Patel, Mayara Paim; Freitas, Marcos Roberto de; Henriques, José Fernando Castanha; Janson, Guilherme (International Orthodontics, 2020)