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ISRN Nanotechnology
Volume 2012 (2012), Article ID 365438, 6 pages
Research Article

Nanosilver Application in Dental Cements

1Department of Prevention and Oral Rehabilitation, School of Dentistry, Federal University of Goiás, 74605220 Goiânia, GO, Brazil
2Department of Oral Science, School of Dentistry, Federal University of Goiás, 74605220 Goiânia, GO, Brazil
3Physics Institute, Federal University of Goiás, 74001970 Goiânia, GO, Brazil

Received 19 April 2012; Accepted 20 June 2012

Academic Editors: P. O. Käll, P. Melinon, T. Pal, and T. I. Shabatina

Copyright © 2012 Ana Paula Rodrigues Magalhães 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.


Streptococcus mutans is the microorganism mostly responsible for initiation of tooth decay and also for the progression of an established lesion. Silver has been used for its antibacterial properties for many years, in different forms: ionised and elementary forms, as silver zeolites or as nanoparticles. The purpose of this study was to evaluate the antibacterial activity of three dental cements modified by nanosilver. Three cements were used: Sealapex, RelyX ARC, and Vitrebond. The cements were incorporated with 0.05 mL of silver nanoparticles solution. Control groups were prepared without silver. Six Petri plates with BHI were inoculated with S. mutans using sterile swabs. Three cavities were made in each agar plate (total = 18) and filled with the manipulated cements. They were incubated at 37C for 48 h, and the inhibition halos were measured. The paired t-Test was used for statistical analysis (𝑃<0.05). No inhibition halos were obtained for Sealapex and Rely X, but Vitrebond showed bactericidal activity without silver and enhanced effect with silver incorporation.