1. Dental Materials Division, Department of Restorative Dentistry Piracicaba Dental School, University of Campinas Piracicaba São Paulo Brazil
2. Department of Clinical Restorative Dentistry Uberaba University Uberaba Minas Gerais Brazil
3. Operative Dentistry Division, Department of Restorative Dentistry Piracicaba Dental School, University of Campinas Piracicaba São Paulo Brazil
4. Department of Biomaterials and Biomimetics New York University College of Dentistry New York New York USA