1 OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University, Leuven, Belgium, Oral and Maxillofacial Surgery, St. John's Hospital, Genk OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University, Leuven, Belgium, Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Mansoura University, Egypt Faculty of Medicine, Hasselt University, Diepenbeek, Belgium OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University, Leuven, Belgium OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University, Leuven, Belgium, Faculty of Medicine, Hasselt University, Diepenbeek, Belgium.