1. Department of Community Dentistry, School of Dentistry; University of São Paulo; Avenida Professor Lineu Prestes, 2227 São Paulo SP 05508-000 Brazil
2. Department of Community Dentistry, School of Dentistry, Araraquara; São Paulo State University (UNESP); Rua Humaitá, 1680 Araraquara SP 14801-903 Brazil
3. Three-dimensional Technologies Division; Renato Archer Information Technology Center; Rodovia Dom Pedro I, km 143.6, Jardim Santa Mônica Campinas SP 13069-901 Brazil