After many years of working at various university dental clinics in Germany and abroad, e.g. USA and Australia, my heart beats with a very special passion for periodontology, and here again especially for the aetiopathogenesis of periodontitis as well as the interactions between periodontal and systemic diseases. I am the Director of the Department of Periodontology and Operative Dentistry at the University Medical Center Mainz. In particular, the trinity of patient treatment, research and teaching excites me about my university work. Sharing my knowledge and experience with others is not only a great pleasure for me, but also an obligation.