1. Department of Prosthodontics Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials Beijing 100081 China
2. South China Center of Craniofacial Stem Cell Research Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat‐sen University Guangzhou 510080 China
3. Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health Xiangya School of Stomatology, Xiangya Stomatological Hospital, Central South University Changsha 410000 China
4. Key Laboratory of Stem Cells and Tissue Engineering (Sun Yat‐Sen University) Ministry of Education Guangzhou 510080 China
5. Department of Oral and Maxillofacial Surgery and Pharmacology University of Pennsylvania, School of Dental Medicine Philadelphia PA 19104 USA