Volume 22, Issue 11 pp. 1227-1234

The effect of chemotherapeutic agents on titanium-adherent biofilms

Victoria Ntrouka

Victoria Ntrouka

Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands

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Michel Hoogenkamp

Michel Hoogenkamp

Department of Cariology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands

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Egija Zaura

Egija Zaura

Department of Cariology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands

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Fridus van der Weijden

Fridus van der Weijden

Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands

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First published: 15 February 2011
Citations: 65
Corresponding author:
Fridus van der Weijden
Department of Periodontology
Academic Centre for Dentistry Amsterdam (ACTA)
University of Amsterdam
Gustav Mahlerlaan 3004 Amsterdam
1081 LA
The Netherlands
Tel.: +31 20 5980 307/548
Fax: +31 20 5980 512
e-mail: [email protected]

Abstract

Objective: To assess the effectiveness of different chemotherapeutic agents on biofilm-contaminated titanium surfaces.

Material and methods: This study used a recently described biofilm model. In experiment 1, Streptococcus mutans biofilms grown on titanium discs were treated with (1) EDTA, (2) citric acid (CA), (3) cetylpyridium chloride, (4) Ardox-X, (5) hydrogen peroxide (H2O2), (6) chlorhexidine (CHX) and (7) water. In experiment 2, polymicrobial biofilms were treated with (1) CA, (2) Ardox-X, (3) H2O2, (4) Ardox-X followed by CA, (5) H2O2 followed by CA, (6) CHX and (7) water. Aliquots of the suspended biofilms were plated and incubated anaerobically to enable counts of the total remaining viable bacteria, which were expressed as CFUs. Following incubation, the amount of protein remaining in the treated S. mutans biofilms was quantified to assess the removal potency of each treatment agent.

Results: H2O2, Ardox-X and CA killed significantly more S. mutans compared with the other treatments. H2O2 and CA removed significantly more protein than water. CA and the combination treatments were significantly more effective against the polymicrobial biofilms than CHX, H2O2 and Ardox-X. The difference in the killing efficacy between CA alone and the combination treatments was not statistically significant.

Conclusion: Among the chemicals tested, CA demonstrated the greatest decontamination capacity with respect to both the killing and the removal of biofilm cells. This combination of effects is clinically desirable because it promotes biocompatibility and healing around a previously contaminated implant surface. These results should, however, be validated in in vivo studies.

To cite this article:
Ntrouka V, Hoogenkamp M, Zaura E, van der Weijden F. The effect of chemotherapeutic agents on titanium-adherent biofilms.
Clin. Oral Impl. Res. 22, 2011; 1227–1234.
doi: 10.1111/j.1600-0501.2010.02085.x

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