Affiliation: | 1. Department of Oral Medicine, School of Dentistry, Kyung Hee University, Seoul, Korea;2. Department of Preventive and Society Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea;3. Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea;4. Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea |