Harjit Singh Sehgal is a distinguished academic and practitioner in the field of periodontology, currently serving as Co-Director of Predoctoral Periodontology and Associate Professor of Periodontology at Oregon Health & Science University since September 2013. Prior experience includes roles as Adjunct Assistant Professor/Periodontist and Dental Fellow/Resident in Periodontology at the University of Minnesota - Dental School from 2007 to August 2013, as well as Research Assistant positions in both the Dental School and Medical School at the University of Minnesota. An early career as a General Dentist at Khanna Dental Hospital and an internship at Manipal College of Dental Surgery further established foundational expertise. Educational credentials include a BDS from Manipal College of Dental Surgery, an MS in Periodontics, and certification as a Diplomate from the American Board of Periodontology. Research contributions focus on the immunological aspects of periodontal disease and biomarkers for cancer, demonstrating a commitment to advancing dental and periodontal science.