1. Department of Pediatric Dentistry and Orthodontics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
2. Department of Operative Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
3. Department of Orthodontics, University of Vale do Rio Verde, Três Corações, MG, Brazil.