1Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2125, USA
2Department of Mechanical Engineering, University of Michigan, 2250 GG Brown Bldg, 2350 Hayward St., Ann Arbor, Michigan 48109-2125, USA
3Oral Medicine, Pathology, and Oncology, School of Dentistry, Ann Arbor, Michigan 48109-1078, USA
4Department of Oral and Maxillofacial Surgery, University of Michigan, Ann Arbor, Michigan 48109-0018, USA
5Department of Surgery, The University of Michigan, Ann Arbor, Michigan 48109-0329, USA