1. Section of Prosthodontics, Department of Biomedical and Neuromotor Science; Alma Mater Studiorum University of Bologna; Bologna Italy
2. Maxillofacial Surgery Unit, S. Orsola-Malpighi Hospital, Department of Biomedical and Neuromotor Science; Alma Mater Studiorum University of Bologna; Bologna Italy
3. Alma Mater Studiorum University of Bologna; Bologna Italy
4. Department of Biomedical and Neuromotor Science; Alma Mater Studiorum University of Bologna; Bologna Italy