Affiliation: | 1. Department of Periodontology, Faculty of Medicine, Catholic University Leuven, , Leuven, Belgium;2. Clinical Biology, Scientific Institute of Public Health, , Brussels, Belgium;3. Department of Prosthetic Dentistry, Faculty of Medicine, Catholic University Leuven, , Leuven, Belgium;4. Oral Imaging Center ‐ omfs impath, Department of Imaging & Pathology, Faculty of Medicine, Catholic University Leuven, , Leuven, Belgium |