1. Doctor of Dental Clinic, Woori Dental Office, Gwangju, Republic of Korea
2. Graduate Student, Department of Dentistry, Graduate School of Chosun University, Gwangju, Republic of Korea
3. Doctor of Dental Clinic, NY Dental Office, Seoul, Republic of Korea
4. Resident, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea
5. Professor, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea