1 Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, Baronissi (Salerno), Italy.
2 Complex Operating Unit of Odontostomatology, Head and Neck Clinical Department, Azienda Ospedaliero-Universitaria San Giovanni di Dio e Ruggid'Aragona, Salerno, Italy.
3 Unit of Odontostomatology, Ospedale Cotugno, Azienda "Ospedali dei Colli", Napoli, Italy.