1. Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
2. Ebiogen, Seoul 04785, Republic of Korea
3. Merden Dental Hospital, Bucheon‑si, Gyeonggi 14544, Republic of Korea
4. Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul 06591, Republic of Korea