| Affiliation: | ∗ Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea;† Maxillofacial Tissue Regeneration and Research Center for Tooth and Periodontal Regeneration, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea;‡ Pediatric Dentistry and School of Dentistry, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea;§ Department of Conservative Dentistry, Dental Research Institute and BK 21 Program, School of Dentistry, Seoul National University, Seoul, Republic of Korea |
