1. Department of Crown and Bridge, The Nippon Dental University, Life Dentistry
2. Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry
3. Department of Fixed Prosthodontics, Nihon University School of Dentistry
4. Division of Digital Dentistry, Department of Oral rehabilitation, Health Sciences University of Hokkaido School of Dentistry
5. Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry