Prof. Dr. Ralf Roessler had Studied chemistry (Dipl.) In Heidelberg and dentistry at the Hannover Medical School and the Justus Liebig University Giessen. From 1990 to 1998 he was a research associate and senior physician of the Department of Periodontology in the Center for Dental, Oral and Maxillofacial Surgery of the University of Giessen. Research focuses on the development of biomaterials and tissue engineering. He did teaching in periodontology, multiple publications and lectures nationally and internationally. From 1998 - 2006 he was Scientific Director of the ZMF School of the Dentistry Chamber of Lower Saxony. From 2001 to 2006 Lecturer at the CHARITÉ - Universitätsmedizin Berlin, Campus Benjamin Franklin, Department of Dentistry and Periodontics. Lecturer in the Master's Degree Program in Implantology at the Steinbeis University Berlin, as well as in curricular advanced training courses of various state dental associations and professional societies.