Prof. Dr. A. Seckin ERTUGRUL, Dental Doctor (Ph.D.-Periodontology), now is a professor of Periodontology, members of the Turkish association of dentists, European Federation of Periodontology and Turkish Federation of Periodontology. He got his Master's Degree at Hacettepe University, Dentistry Faculty and He got his Ph.D and Specialist Dr. in Periodontology, at Selcuk University Dentistry Faculty. His PhD Thesis is about Periodontal, Biochemical and Immunohistochemical Analysis of Patients with Lichen Planus.