Since 2005 Director of the Department of Orthodontics, University of Cologne 2003 Habilitation/Professorial Degree and conferment of ‚venia legendi‘ in the field of orthodontics, RFW-University, Bonn 2003 Prov. Director of the Department of Orthodontics, University of Cologne 1992-2002 Orthodontist,RFW-University, Bonn 1991 MD thesis/Dr. med. in the field of oro- and maxillofacial surgery, FS-University, Jena 1987-1991 Professional education for orthodontics at the FS-University, Jena, and RFW-University, Bonn 1987 Medical license in dentistry, FS-University, Jena