1. Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Japan
2. Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry Asahi University Japan
3. Biomaterials Department, Faculty of Dentistry Modern University for Technology and Information Egypt
4. Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Japan
5. Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Japan
6. The Nippon Dental University Hospital Japan
7. Health Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Japan
8. Advanced Research Center for Oral and Craniofacial Sciences Okayama University Japan
9. Department of Preventive and Restorative Sciences, School of Dental Medicine University of Pennsylvania USA