Deactivation of Streptococcus mutans Biofilms on a Tooth Surface Using He Dielectric Barrier Discharge at Atmospheric Pressure

This paper presents a study of the effect of the low temperature atmospheric helium dielectric barrier discharge（DBD） on the Streptococcus mutans biofilms formed on tooth surface. Pig jaws were also treated by plasma to detect if there is any harmful effect on the gingiva.The plasma was characterize...

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Bibliographic Details
Published in:Plasma science & technology 2013-06, Vol.15 (6), p.535-541
Main Authors: Molnar, Imola, Papp, Judit, Simon, Alpar, Anghel, Sorin Dan
Format: Article
Language:English
Subjects:
Bacteria
Biofilms
Deactivation
Decimals
Dental materials
Dielectric barrier discharge
Helium
Streptococcus
Streptococcus mutans
介质阻挡放电
变形链球菌
常压
牙齿
生物膜
等离子体
等离子处理
表面
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Summary:This paper presents a study of the effect of the low temperature atmospheric helium dielectric barrier discharge（DBD） on the Streptococcus mutans biofilms formed on tooth surface. Pig jaws were also treated by plasma to detect if there is any harmful effect on the gingiva.The plasma was characterized by using optical emission spectroscopy.Experimental data indicated that the discharge is very effective in deactivating Streptococcus mutans biofilms.It can destroy them with an average decimal reduction time（D-time） of 19 s and about 98%of thein were killed after a treatment time of 30 s.According to the survival curve kinetic an overall 32 s treatment time would be necessary to perform a complete sterilization.The experimental results presented in this study indicated that the helium dielectric barrier discharge,in plan-parallel electrode configuration,could be a very effective tool for deactivation of oral bacteria and might be a promising technique in various dental clinical applications.
ISSN:1009-0630
DOI:10.1088/1009-0630/15/6/09