1. Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
2. National Center for Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
3. National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
4. National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
5. Beijing Key Laboratory of Digital Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China