Affiliation: | Addresses of authors: Dental Science Research Institute, 2nd stage Brain Korea, School of Dentistry, Chonnam National University, Gwangju, South Korea 500-757;;Department of Oral Anatomy, School of Dentistry, Wonkwang University, Iksan, South Korea 570-749;;Corresponding author: Tel.: 82 62 530 4822;fax: 82 62 530 4829;e-mail: |