| Affiliation: | 1. Department of Prosthodontics, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil;2. Department of Dental Ecology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA;3. Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil;4. Department of Periodontology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA;5. Department of Applied Oral Sciences, Forsyth Institute, Cambridge, MA, USA |
