1. Department of Dentistry; Centro Universitário do Norte Paulista; São José do Rio Preto SP Brazil
2. Department of Operative Dentistry; Universidade Federal do Rio Grande do Sul; Porto Alegre RS Brazil
3. Department of Biomaterials and Biomimetics; New York University; New York NY USA
4. Department of Prosthodontics and Periodontology; Bauru School of Dentistry; University of São Paulo; Bauru SP Brazil