KU Leuven, Department of Oral Health Sciences, Section of Periodontology and Oral Microbiology &, University Hospitals Leuven Dentistry, Leuven, Belgium. KU Leuven, Department of Imaging and Pathology, OmfsImpath Research Group, Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium. Karolinska Institutet, Department of Dental Medicine, Stockholm, Sweden.