Career History
- Associate Dean for Research, Texas A&M University-Health Science Center (TAMU-HSC) School of Dentistry, Dallas, USA (2022-Present)
- Professor with tenure, Department of Biomedical Sciences, Texas A&M University College of Dentistry (2013-present)
- Associate Professor with tenure, Department of Biomedical Sciences, Texas A&M University College of Dentistry (2009-2013)
- Assistant Professor, Department of Biomedical Sciences, Texas A&M University College of Dentistry (2006-2009)
- Assistant Professor, Department of Endodontics, University of Texas Health Science Center at Houston, Dental Branch (2003-2006)
- Visiting Scientist, Department of Oral Pathology, Okayama University School of Dentistry, Okayama, Japan (1993-1994)
- Visiting Scientist, Department of Oral Surgery, Asahi University School of Dentistry, Japan (1992-1993)
- Senior Assistant Professor (Lecturer), Senior Doctor, Department of Oral and Maxillofacial Surgery, Harbin Medical University School of Dentistry, China (1989-1992)
- Assistant Professor, Department of Endodontics & Periodontics, Harbin Medical University School of Dentistry, China (1983-1986)