1. Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
2. Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun 130021, China
3. Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130021, China
4. Department of Periodontology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China