1994.3 - 1998. 2.	Seoul National University School of Dentistry
1999.3 - 2001. 2.	Residency program at Seoul National University Dental Hospital
2004. 5. – 2007. 4.	Clinical lecturer at department of Oral and Maxillofacial Radiology, Seoul National University Dental Hospital
2006. 2.	PhD at Seoul National University School of Dentistry
2007. 8. –2011. 8.	Assistant Professor at department of Oral and MaxillofacialRadiology, Seoul National University School of Dentistry
2010. 12 – 2011. 11.	Visiting Scholar at Endocrine Centre of Excellence, University of Melbourne
2011. 9. – 2016. 8.	Associate Professor at department of Oral and Maxillofacial Radiology, Seoul National University School of Dentistry
2016. 9. - Present.	Professor at department of Oral and Maxillofacial Radiology, Seoul National University School of Dentistry