1. Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan.
2. SHIKEN Corporation, Higashi-Osaka, Japan.
3. Dental Laboratories, Hospital Medical Technology Part, Okayama University Hospital, Okayama, Japan.
4. Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan.