1. NMPA Key Laboratory for Dental Materials National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Laboratory of Biomedical Materials Beijing Key Laboratory of Digital Stomatology Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
2. Department of Geriatric Dentistry Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
3. The School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
4. Department of Dental Materials & Dental Medical Devices Testing Center Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
5. Central Laboratory Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
6. School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 P. R. China
7. Department of Physics Beijing Normal University Beijing 100875 P. R. China