1. Professor and Chair, Department of Prosthodontics and Dental Materials; University of Siena; Siena Italy
2. PhD Student, Department of Prosthodontics and Dental Materials; University of Siena; Siena Italy
3. Assistant Professor, Department of Prosthodontics and Dental Materials; University of Siena; Siena Italy
4. Research Professor, Department of Prosthodontics and Dental Materials; University of Siena; Siena Italy
5. Professor and Chair, Department of Dentistry; University “Vita Salute San Raffaele” of Milan; Milan Italy
6. Professor and Chair, Department of Neurosciences, Reproductive and Odontostomatological Sciences; University “Federico II” of Naples; Naples Italy