1. Department of Dentistry; Faculty of Dentistry; State University of Paraiba; Campina Grande Brazil
2. Department of Prosthodontics and Periodontology; Piracicaba School of Dentistry; University of Campinas; Piracicaba Brazil
3. Department of Dental Materials and Prosthesis; Araraquara School of Dentistry; State University of São Paulo; Araraquara Brazil
4. Department of Pediatric Dentistry and Orthodontics; Rio de Janeiro School of Dentistry; Federal University of Rio de Janeiro; Rio de Janeiro Brazil
5. Department of Dentistry; Paraiba School of Dentistry; Federal University of Paraiba; João Pessoa Brazil
6. Department of Dentistry; Paraiba School of Dentistry; State University of Paraiba; Campina Grande Brazil