1Department of Periodontology, College of Dentistry, Chosun University, Gwang-ju, South Korea.
2Department of Oral Biochemistry, College of Dentistry, Chosun University, Gwang-ju, South Korea.
3Department of Oral Histology, College of Dentistry, Chosun University, Gwang-ju, South Korea.
4Department of Oral Anatomy, College of Dentistry, Chosun University, Gwang-ju, South Korea.
5Oral Biology Research Institute, Chosun University, Gwang-ju, South Korea.
6Research Institute for Periodontal regeneration, College of Dentistry, Yonsei University, South Korea.
Corresponding author: Byung-Ock Kim, DDS, MSD, PhD, Department of Periodontology, College of Dentistry, Chosun University, 425 Seosuk-dong, Dong-ku, Gwang-ju, 501-825, South Korea. Tel: 82-62-220-3850, Fax: 82-62-224-4664, bobkim@mail.chosun.ac.kr