1. Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
2. Post-Graduate Program in Oral Sciences (Periodontology Unit), School of Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, 97105-900, Brazil
3. Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
4. Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
5. Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan 48109-1078, United States