Affiliation: | a Research Fellow, Department of Stomatology, School of Dentistry, University of Granada, Granada, Spain b Associate Professor, Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil c Research Fellow, Department of Dental Materials and Prosthodontics, São Paulo State University at São Jose dos Campos, Brazil d Associate Professor, Department of Restorative Dentistry, School of Dentistry, Federal University of Santa Maria, Rio Grande do Sul, Brazil e Chair and Professor, Department of Dental Materials and Prosthodontics, São Paulo State University at São Jose dos Campos, Brazil f Professor, Department of Prosthodontics, School of Dentistry, University of Granada, Granada, Spain |