1. Department of Prosthodontics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.
2. RIS Foundation for Advanced Biomaterials, Chonnam National University, Gwangju, Republic of Korea.
3. Department of Materials Science and Engineering, Chonnam National University, Gwangju, Republic of Korea.
4. Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.