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Effects of dynamic fluid activity from an electric toothbrush on in vitro oral biofilms

Hope, C.K. and Wilson, M. (2003) Effects of dynamic fluid activity from an electric toothbrush on in vitro oral biofilms. Journal of Clinical Periodontology, 30 (7). pp. 624-629. ISSN 1600-051X (Online); 0303-6979 (Print)

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Official URL: http://www.blackwell-synergy

Cited 9 times in WoS

Abstract

Objectives: To determine the plaque removing ability of a Sonicare Plus® electric toothbrush in an in vitro model. Materials and Methods: Multi-species oral biofilms derived from human saliva were grown on hydroxyapatite discs in a constant-depth film fermenter. The biofilms were placed in a typodont model so that they mimicked the interproximal plaque between teeth 46 and 47 and were then treated with an electric toothbrush, both activated and inactivated. The distance from the bristle tips to the edge of the disc was 2.65mm. Brushing action was controlled by a specially-constructed brushing machine. After brushing, the number of viable bacteria removed from, and remaining in, the biofilms were determined. Results: 73.70% of viable bacteria in the biofilms were dislodged from the discs using the activated toothbrush An inactivated toothbrush removed only 3.66%. Scanning electron microscopy and confocal microscopy revealed differences between untreated and treated biofilms. Conclusion. The fluid shear forces generated by the electric toothbrush penetrated at least 2.65 mm beyond the reach of the bristles and these forces contributed to the toothbrush’s plaque-removal ability (P<0.001).

Item Type:Article
Additional Information:Issue: July 2003
Uncontrolled Keywords:biofilm; plaque; sonic toothbrush; constant-depth film fermenter; STREPTOCOCCUS-SANGUIS; SUPRAGINGIVAL PLAQUE; EFFICACY; SONICARE(R); SUSCEPTIBILITY; GINGIVITIS; REDUCTION; BACTERIA; REMOVAL; DEPTH
Subjects:R Medicine > RK Dentistry
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Medicine > School of Dental Sciences
DOI:10.1034/j.1600-051X.2003.00307.x
Publisher's Statement:The definitive version is available at www.blackwell-synergy.
Refereed:Yes
Status:Published
ID Code:74
Deposited On:28 Apr 2008 14:37
Last Modified:20 May 2011 19:42

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