The graduate programs that have been approved are the following: Academic Centre for Dentistry Amsterdam, University of Bern, Sahlgrenska University Göteborg, Institute for Postgraduate Dental Education Jönköping, UCL Eastman Dental Institute, Université catholique de Louvain, University Complutense in Madrid, University of Dublin, Trinity College, University of Strasbourg, Paris Diderot University at Rothschild hospital.
John Mankey Riggs, first American dentist specializing in periodontology