GeraI., “A new classification scheme for periodontal and peri-implant diseases and conditions – First part: Gingival health and gingival diseases: Based on the American Academy of Periodontology (AAP) and the European Federation of Periodontology (EFP) World Workshop on the Classification of Periodontal and Peri-implant Diseases and Conditions (2017) consensus reports”, fogorv-szemle, vol. 111, no. 3., pp. 91-102., Sep. 2018.