1. Department of Conservative Dentistry, Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.
2. Department of Conservative Dentistry, College of Dentistry, Wonkwang University, Iksan, Republic of Korea.
3. Department of Conservative Dentistry, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea.
4. Department of Conservative Dentistry, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
5. Department of Dental Biomaterials and Institute of Biomaterials · Implant, College of Dentistry, Wonkwang University, Iksan, Republic of Korea.