1. Department of Fixed Prosthodontics, Nihon University School of Dentistry
2. Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
3. Department of Oral and Maxillofacial Surgery, Juntendo Tokyo Koto Geriatric Medical Center
4. Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
5. Department of Dental Materials, Nihon University School of Dentistry
6. Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry