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ISSN 打印: 1947-5764

ISSN 在线: 1947-5772

SJR: 0.216 SNIP: 0.263 CiteScore™:: 1.4 H-Index: 24

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Disinfection of Dental Equipment—Inactivation of Enterococcus mundtii on Stainless Steel and Dental Handpieces using Surface Micro-Discharge Plasma

卷 7, 册 4, 2017, pp. 407-416
DOI: 10.1615/PlasmaMed.2018019502
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摘要

Cold atmospheric plasma produced by a surface micro discharge (SMD) device was used to investigate the bactericidal efficacy for Enterococcus mundtii inoculated and dried on stainless steel and dental handpieces. The novelty of this approach can be explained by the used setup incorporating a circular plasma system. The circular plasma system produces reactive plasma species, which are transported through the narrow cavities of a dental handpiece into a separate treatment chamber and which are subsequently recycled and transported back to the SMD electrode. To investigate the efficacy of this circular plasma setup, stainless-steel plates inoculated with E. mundtii were placed in the treatment chamber and treated with plasma. The results show that a 5 log reduction in bacterial number can be achieved within only 15 min of plasma treatment time, although the plasma species had to pass the narrow channels of the dental handpiece before entering the treatment chamber. First results with E. mundtii inoculated directly on the outer side of the dental handpiece showed a 2 log reduction within 15 min of plasma application. Further investigations targeting this latter issue are nevertheless necessary to investigate the plasma treatment time to achieve full disinfection also on dental handpieces.

对本文的引用
  1. Müller Meike, Shimizu Tetsuji, Binder Sylvia, Rettberg Petra, Zimmermann Julia L., Morfill Gregor E., Thomas Hubertus, Plasma afterglow circulation apparatus for decontamination of spacecraft equipment, AIP Advances, 8, 10, 2018. Crossref

  2. Tschang Chen-Yon Tobias, Thoma Markus, In vitrocomparison of direct plasma treatment and plasma activated water onEscherichia coliusing a surface micro-discharge, Journal of Physics D: Applied Physics, 53, 5, 2020. Crossref

  3. Moritz Sandra, Schmidt Alisa, Sann Joachim, Thoma Markus H, Surface modifications caused by cold atmospheric plasma sterilization treatment, Journal of Physics D: Applied Physics, 53, 32, 2020. Crossref

  4. Ding Tian, Xu Enbo, Liao Xinyu, Inactivation of Bacteria by Cold Plasma, in Applications of Cold Plasma in Food Safety, 2022. Crossref

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