| Affiliation: | 1. Unit of Periodontology, Department of Restorative Dentistry, Periodontology, and 2. Endodontology, University Medicine, Ernst‐Moritz‐Arndt‐University Greifswald, Greifswald, Germany;3. Department of Prosthodontics, Gerodontology, and Biomaterials, Centre of Oral Health, Greifswald University, Greifswald, Germany;4. Department of Periodontology, Medical Faculty Carl Gustav Carus, Dresden, Germany;5. Institute for Community Medicine, University Medicine of Greifswald, Greifswald, Germany;6. Institute of German Dentists, K?ln, Germany |
