1. Zhejiang Key Laboratory of Plastic Modification and Processing Technology, College of Materials Science& Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
2. Department of Periodontology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, P. R. China
3. Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310000, P. R. China
4. Department of Orthopedics, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P. R. China
5. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
6. The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States