1. Department of Prosthodontics Peking University School and Hospital of Stomatology Beijing PR China
2. National Engineering Laboratory for Digital and Material Technology of Stomatology Beijing PR China
3. Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health Beijing Key Laboratory of Digital Stomatology Beijing PR China
4. Private practice Beijing PR China
5. Department of Periodontology Peking University School and Hospital of Stomatology Beijing PR China
6. Division of Restorative Dental Sciences, Department of Clinical Sciences, College of Dentistry Ajman University Ajman City UAE
7. Department of Reconstructive Dentistry & Gerodontology, School of Dental Medicine, Faculty of Medicine University of Bern Berne Switzerland
8. Center of Medical and Bio‐allied Health Sciences Research Ajman University Dubai United Arab Emirates