Affiliation: | 1. Department of Dental Materials and Prosthodontics, Ribeir?o Preto School of Dentistry, S?o Paulo University, Ribeir?o Preto, S?o Paulo, Brazil;2. Department of Restorative Dentistry, Ribeirao Preto School of Dentistry, S?o Paulo University, Ribeir?o Preto, S?o Paulo, Brazil;3. Department of Restorative Dentistry, Dental Materials Area, Piracicaba School of Dentistry, Campinas State University, Piracicaba, S?o Paulo, Brazil |