1. Department of Oral Anatomy; Dental Science Research Institute, School of Dentistry, 2nd stage Brain Korea, Medical Research Center for Biomineralization Disorders, Chonnam National University; Gwangju South Korea
2. Department of Periodontology; Dental Science Research Institute, School of Dentistry, Chonnam National University; Gwangju South Korea
3. Department of Microbiology; College of Medicine, Seonam University; Namwon South Korea