He is also chairman of the Department of Periodontology/Oral Biochemistry.. Loos received his dental degree in Amsterdam and his MSc degree in periodontology at Loma Linda University, CA, USA. Thereafter Loos received a Ph.D. degree in Oral Biology at the University at Buffalo, NY, USA. He served as director of the ACTA’s MSc program in Oral Health Sciences and is Director of the EFP-accredited postgraduate periodontology program. He is co-director of ACTA’s research program “Oral Infections and Inflammation”. Loos is involved in fundamental research-questions related to the immunobiology of periodontal and peri-implant diseases and oral health. His clinical research focusses on relationships between oral health and systemic health, as well as clinical studies in the treatment of peri-implant diseases.