1990-1998 Department of Oral Surgery and Dental Policlinic, University of Giessen, Germany
1992 Specialist in Oral Surgery in Germany
1999-2001 Clinic of Oral Surgery and Stomatology, University of Bern, Switzerland
Since 2001 Clinic of Oral Surgery, Oral Radiology and Oral Medicine, University Center for Dental Medicine, Switzerland
2001 Specialist in Oral Surgery in Switzerland
2006 Founder and Head of the Center of Dental Traumatology Basel, Switzerland