Division of Environmental Physics - User: igor
Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava

Biofilm Inactivation On Teeth And Plastic Surfaces With DC Corona Discharges

Šipoldová Z., Machala Z.
13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII), Kazimierz Dolny (Poland) , September 9-14, p. 190-194 (2012)

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Abstract:

A cold plasma of DC corona discharges: positive streamer corona and negative Trichel pulses was
used for bio-decontamination of Streptococci biofilm on plastic and teeth surfaces. Enhancement
of plasma biocidal effects by was investigated. Electro-spraying of water through a hollow needle
high-voltage electrode significantly increased the bacterial reduction up to 4 logs with both types
of samples. Analysis of tooth surfaces after plasma treatment was carried out by Fourier transform
infrared spectroscopy (FTIR) did not show any chemical changes on plasma treated teeth.