1. Research Institute of Surface Engineering
2. Taiyuan University of Technology
3. Taiyuan
4. China
5. Department of Orthopedics
6. Central Hospital of Tongchuan Mining Bureau
7. Tongchuan
8. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases
9. Department of Periodontology
10. School of Stomatology
11. The Fourth Military Medical University
12. Xi'an