1. Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
2. Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS 66506, USA
3. Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA
4. Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA 19122, USA
5. Department of Medical Engineering, University of South Florida, Tampa, FL 33620, USA
6. Department of Electrical Engineering, University of North Texas, Denton, TX 76203, USA
7. Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA