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BioMed Research International
Volume 2015, Article ID 159625, 6 pages
Research Article

Oral Streptococci Biofilm Formation on Different Implant Surface Topographies

1Department of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, Praça Tereza Cristina 229, 07023-070 Guarulhos, SP, Brazil
2Department of Operative Dentistry, Dental Research Division, Guarulhos University, Praça Tereza Cristina 229, 07023-070 Guarulhos, SP, Brazil
3Department of Oral Implantology, PUC Minas, Avenida Dom Cabral 500, Prédio 46, Coração Eucarístico, 30535-901 Belo Horizonte, MG, Brazil
4Biotecnos-Tecnologia e Ciência Ltda, Rua Dr. Bozano, 571 Centro, 97015-001 Santa Maria, RS, Brazil

Received 7 September 2014; Revised 4 November 2014; Accepted 4 November 2014

Academic Editor: David M. Dohan Ehrenfest

Copyright © 2015 Pedro Paulo Cardoso Pita et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The establishment of the subgingival microbiota is dependent on successive colonization of the implant surface by bacterial species. Different implant surface topographies could influence the bacterial adsorption and therefore jeopardize the implant survival. This study evaluated the biofilm formation capacity of five oral streptococci species on two titanium surface topographies. In vitro biofilm formation was induced on 30 titanium discs divided in two groups: sandblasted acid-etched (SAE- ) and as-machined (M- ) surface. The specimens were immersed in sterilized whole human unstimulated saliva and then in fresh bacterial culture with five oral streptococci species: Streptococcus sanguinis, Streptococcus salivarius, Streptococcus mutans, Streptococcus sobrinus, and Streptococcus cricetus. The specimens were fixed and stained and the adsorbed dye was measured. Surface characterization was performed by atomic force and scanning electron microscopy. Surface and microbiologic data were analyzed by Student’s -test and two-way ANOVA, respectively (). S. cricetus, S. mutans, and S. sobrinus exhibited higher biofilm formation and no differences were observed between surfaces analyzed within each species (). S. sanguinis exhibited similar behavior to form biofilm on both implant surface topographies, while S. salivarius showed the lowest ability to form biofilm. It was concluded that biofilm formation on titanium surfaces depends on surface topography and species involved.