[1
]Department of Prosthodontics Peking University School and Hospital of Stomatology
and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory
for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital
Stomatology Beijing China
[2
]Experimental Medicine Section National Institute of Dental and Craniofacial Research
National Institutes of Health Bethesda Maryland USA
[3
]Laboratory of Biochemistry and Genetics NIDDK/NIH Bethesda Maryland USA