1. Department of Clinical Sciences and Stomatology, Faculty of Medicine, Polytechnic University of Marche, Palace “Murri”, Floor No. 3, Via Tronto 10, 60126 Ancona, Italy
2. Special and Surgical Stomatology Department, “Ospedali Riuniti” Hospital of Ancona, Via Conca 2, 60126 Ancona, Italy
3. Stomatology and Maxillofacial Science Department, University of Rome “La Sapienza”, Italy