1. MS student, Department of Orthodontics, School of Dentistry, Universidade Luterana do Brasil, Canoas, Brazil
2. Professor, Department of Pediatric Dentistry, School of Dentistry, Universidade Luterana do Brasil, Canoas, Brazil
3. Professor, Department of Orthodontics, School of Dentistry, Universidade Luterana do Brasil, Canoas, Brazil