1 Department of Oral and Maxillofacial Surgery; Technische Universität München; Klinikum Rechts der Isar; München, Germany (Mücke, Ritschl) Department of Oral and Maxillofacial Surgery; Oral and Facial Specialties Department; Mid Yorkshire Hospitals NHS Trust; West Yorks, United Kingdom (Mitchell, Kanatas) Department of Oral and Maxillofacial Surgery; Technische Universität München; Klinikum Rechts der Isar; München, Germany (Wolff).