Jae-Min Song1, Jae-Yeol Lee1,2, Yong-Deok Kim2,3. 1. 1 Biomedical Research Institute, Pusan National University Hospital, Busan, Korea. 2. 2 Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Korea. 3. 3 Institute of Translational Dental Sciences, Pusan National University, Yangsan, Korea.