The Open Dentistry Journal




ISSN: 1874-2106 ― Volume 13, 2019

Potentials of Mouthwashes in Disinfecting Cariogenic Bacteria and Biofilms Leading to Inhibition of Caries



Takehiro Oyanagia, Junji Tagamia, b, Khairul Matina, c, *
a Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
b Global Center of Excellence Program; International Research Center for Molecular Science in Tooth and Bone Diseases, Tokyo Medical and Dental University
c PerfectPerio Co. Ltd., Tochigi, Japan

Abstract

Objectives:

The aim of this study was to compare the effects of certain commercially available mouthwashes on cariogenic bacteria and biofilms, following the acquisition of inhibition potentials of caries.

Materials and Methods:

Mouthwashes containing I) chlorhexidine gluconate (CHG; 0.0005% w/v), II) benzethonium chloride (BTC; 0.01% w/v), III) an essential oil (Listerine), and IV) povidone-iodine (PVP-I; 0.035% w/v) were tested on planktonic cariogenic bacteria, biofilms, and an ex vivo caries model. Bacterial aliquots were inoculated with each solution separately and vortexed for 10 seconds at room temperature. Bacterial viability was subsequently investigated by fluorescence microscopy (FM) after staining with a BacLight viability kit and the number of colony-forming units (CFUs) was counted. Similarly, mouthwash solutions were applied to artificial cariogenic biofilms, and bacterial viability of the biofilms was investigated as stated above. Inhibition potentials of two selected mouthwashes of carious lesions were investigated using biofilm-induced caries and a secondary caries model. In all steps, a phosphate-buffered saline (PBS) solution was included as a control.

Results:

Planktonic cariogenic bacteria and bacteria embedded in biofilms were killed in remarkably large numbers with Listerine and PVP-I treatment compared to PBS and other gargles. CFU counts also showed significant reduction after treatment with Listerine and PVP-I compared to other solutions (P<0.05). Listerine also displayed significant (P<0.05) inhibition effects in preventing the progression of demineralization.

Conclusion:

Bactericidal potencies of the mouthwashes varied significantly, suggesting that mouthwashes like Listerine can be useful for the prevention of caries and secondary caries.

Keywords: Cariogenic bacteria, cariogenic biofilms, inhibition of caries and secondary, mouthwashes, prevention of caries and secondary caries.


Article Information


Identifiers and Pagination:

Year: 2012
Volume: 6
First Page: 23
Last Page: 30
Publisher Id: TODENTJ-6-23
DOI: 10.2174/1874210601206010023

Article History:

Received Date: 20/10/2011
Revision Received Date: 25/11/2011
Acceptance Date: 8/12/2011
Electronic publication date: 19/1/2012
Collection year: 2012

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© Oyanagi et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.


* Address correspondence to this author at the Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan; 113-8549; Tel: +81-3-5803-4623/4624, Fax: +81-3-5803-0195, E-mail: matin.ope@tmd.ac.jp


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