Professor Haak is director and head of the Department of Cariology, Endodontology and Periodontology at the University Hospital of Leipzig. He graduated in dentistry at the Free University of Berlin in 1992 and changed to Cologne as associate professor in 1996. There, he received his habilitation in 2004. Furthermore, he is one of the first qualified specialists in preventive and restorative dentistry and became a Master of Medical Education (MME) at the University of Heidelberg in 2008. His main working areas in research are innovative methods for caries detection and assessment, therapeutic decision making and adhesive dentistry as well as medical education and especially dentist-patient-communication.