Prof. Dr. Dr. Peter Kessler graduated at the dental school of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) in 1986. From 1987 until 1989 he worked as a dental assistant in private praxis Dr. Dr. H. Herold in Nürnberg, Germany. He studied medicine at the medical school of Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany and graduated in 1994. He was a resident at the Klinik für Mund-Kiefer-Gesichtschirurgie, Kantonsspital Luzern, Switzerland (Prof. Dr. Dr. N. Hardt) until 1998. From 1998 he was a scientific coworker at the Klinik und Poliklinik für Mund-, Kiefer-, Gesichtschirurgie, Friedrich-Alexander-Universität Erlangen-Nürnberg (Prof. Dr. Dr. F.W. Neukam). He recieved his qualification as specialist for Cranio-Maxillofacial Surgery in 1999 and in the next two years he worked as a specialist at the Klinik und Poliklinik für Mund-, Kiefer-, Gesichtschirurgie, Friedrich-Alexander-Universität Erlangen-Nürnberg (Prof. Dr. Dr. F.W. Neukam). Between 2002 and 2007 he was a senior lecturer and vice director at the Klinik und Poliklinik für Mund-, Kiefer-, Gesichtschirurgie, Friedrich-Alexander-Universität Erlangen-Nürnberg (Prof. Dr. Dr. F.W. Neukam). He recieved his qualification for plastic surgery in 2003. Currently he works as Professor and Head of the Department of Cranio-Maxillofacial Surgery, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.