1. Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, California 90095, United States
2. Department of Materials Science and Engineering, Samueli School of Engineering, University of California, Los Angeles, California 90095, United States
3. Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
4. Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, California 90095, United States
5. Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
6. Department of Orthopedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, California 90095, United States
7. The ADA Forsyth Institute, Cambridge, Massachusetts 02140, United States