1. Department of Dental Materials Science, Tokyo Dental College Tokyo Japan
2. Oral Health Science Center, Tokyo Dental College Tokyo Japan
3. Department of Anatomy, Tokyo Dental College Tokyo Japan
4. Department of Histology and Developmental Biology Tokyo Japan
5. Department of Oral and Maxillofacial Radiology, Tokyo Dental College Tokyo Japan
6. Division of Materials and Manufacturing Science, Graduate School of Engineering Osaka University Osaka Japan