1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China
2. Biofilm Research Laboratories, Levy Center for Oral Health, Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
3. Solid-Biological Interface Group (SolBIN), Departamento de Física, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
4. Department of Biochemistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA