DDS(1999), PhD (2007), Yonsei University, College of Dentistry 

2000-2003: Specialty Training in Periodontics & MS in Oral BiologyTemple University, USA  

2008-Present  Professor in the department of Periodontology, School of Dentistry, Seoul National University  

2014-7 Visiting Professor. Augusta University, The Dental College of Georgia

Periodontology 2000, Associate Editor, Journal of Clinical Periodontology Editorial Board

MINEC Board, Osteology Foundation (Expert Council member)

ITI Foundation: ITI Fellow, ITI Study Club Director (Seoul Section)

Vice President- Korean Academy of Periodontology

First-Prize winner in Clinical Research at 2019 Osteology International Symposium & First-Prize winner in Basic Research- 2019 Korean Academy of Periodontology

Author of over 130 publications in peer-reviewed international journals