Affiliation: | 1. Section of Periodontics, Department of Dentistry and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy;2. Research Centre for the Study of Periodontal and Peri‐Implant Diseases, University of Ferrara, Ferrara, Italy;3. Operative Unit of Dentistry, University‐Hospital of Ferrara, Ferrara, Italy |