1. Institute of Science and Technology – ICT, Department of Dental Materials and Prosthodontics, São José dos Campos Dental School, São Paulo State University (UNESP/SJC), São José dos Campos, Brazil
2. Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
3. Division of Dental Biomaterials, Clinic for Reconstructive Dentistry, University of Zurich, Center for Dental and Oral Medicine, Zurich, Switzerland