Professor M. Quirynen graduated in 1980 as dentist and finished in 1984 his training in periodontology at the department of Periodontology (both Catholic University Leuven). In 1986 he presented his PhD. In 1990 he was appointed professor at the Faculty of Medicine of the Catholic University of Leuven to teach periodontology and anatomy. His research deals mainly with oral microbiology, oral malodour, simplification/optimization of periodontal therapy including implant surgery, benefits of L-PRF. He published over 400 full papers in international peer-reviewed journals. He is member of the editorial board of the Journal of Clinical Periodontology (associate editor), Clinical Oral implants Research, Journal of Dental Research, ….