1. Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S), University of Palermo, Sicily, Italy
2. Unit of Oral Medicine and Dentistry for Fragile Patients, Department of Rehabilitation, Fragility and Continuity of Care, University Hospital Palermo, Palermo, Italy
3. Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy