Dr Christian Köhler, MD – an expert in esthetic surgery, non-surgical techniques, and esthetic laser treatments – has, for more than 10 years, headed up the Prevention Center in Zürich, Zug and Schaan, Switzerland. He has more than 18 years of experience in general, vascular, reconstructive, and plastic surgery and to date has performed more than 50,000 nonsurgical treatments with botulinum toxin and fillers.

Following his physiotherapy certification, Dr. Kolster studied human biology and human medicine in Marburg. He has undertaken further clinical studies in physical medicine and other disciplines, with a special focus on the presentation and application of reflex-therapeutic procedures. Dr. Kolster is the author and editor of scientific textbooks in the fields of medicine, physiotherapy, naturopathic medicine, and physical medicine.

Abteilungsleiter in verschiedenen Laboratorien, mehrjährige Tätigkeit in der Industrie, Mitwirkung an der Entwicklung von Prothesen-Fertigstellungssystemen und deren Materialien, Eigene Entwicklungen: das Prothesen-Fertigstellungssystem und deren Materialien PremEco-Line, im Vertrieb der Firma Merz Dental GmbH, Lütjenburg, sowie das Prothetik-Color-System zum farblichen Charakterisieren von Prothesen und das Cera-Color-Set zum farblichen Charakterisieren der Wachsmodellation, seit 1992 selbstständiger und firmenunabhängiger Schulungsleiter für alle Bereiche der Totalprothetik im In- und Ausland, Vorträge und Workshops, unter anderem in den meisten Ländern Europas sowie Japan, Gründungsmitglied der „Dental Excellence International Laboratory Group“, Autor zahlreicher Beiträge in der nationalen und internationalen Fachpresse, Begründer der T i F®-Aufstellmethode, einem praxisnahen und prüfungsorientierten Verfahren zum methodischen Erlernen von Prothesenaufstellungen, veröffentlicht in den Büchern: „T i F®-Totalprothetik in Funktion“ und „Individuelle Totalprothetik – Erfolgreiche Patientenversorgung nach dem T i F®-System“, beide Quintessenz-Verlag, Berlin, Seit Dezember 2009 Inhaber des Fachlabors TRIGOdental – einem Fachlabor für funktionelle und individuelle Totalprothetik, Bonn-Oberkassel

1993–1998: Study of dentistry at the University of Mainz. 1998–2001: Research associate in the Department of Dental Conservation and Periodontology at the University of Mainz. 2000: Doctorate. 2001–2003: Practice-related studies in business administration at the Business Administration Institute of Prof. Dr. Braunschweig, graduating with a degree in health economics. 2001–2004: Employed dentist at the Center for Dentistry and associate at the Private Institute for Periodontology and Implantology Munich with Dr. W. Bolz, Prof. Dr. H. Wachtel, Prof. Dr. M. Hürzeler and Dr. O. Zuhr. Since 2004: Established in own practice in Mainz with focus on implantology, periodontology, functional diagnostics and restorative dentistry. Since 2015: Joint practice with Dr. Ina Köttgen MSc. specializing in functional diagnostics, periodontology, implantology and restorative dentistry. 2017: Publications in numerous journals on the topics of periodontology, implantology, prophylaxis and esthetics. Multiple lecturing activities on the topics of periodontology, prophylaxis, esthetic dentistry and implantology and implant prosthetics and complex treatment planning. Lecturer of the master course " Master Online Periodontology" of the University of Freiburg. Chairman of the Intensive Continuing Education and Continuum Department of the BZKR. Member of the Representative Assembly of the BZK Rheinhessen. Deputy Chairman of the Representative Assembly of the BZK Rheinhessen. Member of the editorial board of "Der junge Zahnarzt" (Springer Verlag).

Ina Köttgen, Dr med dent, MSc, maintains a joint private practice with Dr Christopher Köttgen in Mainz, Germany, limited to functional diagnostics, periodontology, implantology, and restorative dentistry. She is a member of several professional organizations, including the German Society for Periodontology.