1. Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; 1011 N. University Ave. Ann Arbor MI 48109 USA
2. Department of Biomedical Engineering; University of Michigan College of Engineering; 1101 Beal Ave. Ann Arbor MI 48109 USA
3. Department of Periodontology; Institute of Odontology; Medicinaregatan 12F; University of Gothenburg; SE-405 30 Gothenburg Sweden
4. Institute of Odontology; Medicinaregatan 12F; The Sahlgrenska Academy at University of Gothenburg; SE-405 30 Gothenburg Sweden
5. Biointerfaces Institute; Department of Materials Science and Engineering; University of Michigan College of Engineering; 2800 Plymouth Rd Ann Arbor MI 48109 USA
6. Department of Chemical Engineering; Department of Macromolecular Science and Engineering; University of Michigan College of Engineering; 2800 Plymouth Rd Ann Arbor MI 48109 USA