Standardization and threshold of digital subtraction radiography for detecting alveolar bone change

Noh, Hyuen-Soo (The Graduate School Yonsei University Department of Dental Science Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
Kim, Kee-Deog (The Graduate School Yonsei University Department of Dental Science Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
Choi, Seong-Ho (The Graduate School Yonsei University Department of Dental Science Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
Kim, Chong-Kwan (The Graduate School Yonsei University Department of Dental Science Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
Cho, Kyoo-Sung (The Graduate School Yonsei University Department of Dental Science Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University)