1. Department of Hard Tissue Research; Graduate School of Oral Medicine; Matsumoto Dental University; Shiojiri Japan
2. Department of Oral and Maxillofacial Radiology; School of Dentistry; Matsumoto Dental University; Shiojiri Japan
3. Department of Periodontology; School of Dentistry; Matsumoto Dental University; Shiojiri Japan
4. Department of Oral and Maxillofacial Surgery; School of Dentistry; Matsumoto Dental University; Shiojiri Japan