A study on characterization of atmospheric pressure plasma jets according to the driving frequency for biomedical applications

Seo, Young Sik; Lee, H.Wk.; Kwon, Hyeokjin; Choi, Jun; Lee, S.M.; Woo, Kyung Chul; Kim, Kyong‐Tai; Lee, J.K.

doi:10.1016/j.tsf.2010.11.057

Cited by 47 publications

(19 citation statements)

References 28 publications

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“…This is because of the difference in frequency and gas. This supports the result of previous research in that argon gas would create a higher current density and more active species than helium gas [31]. In addition, microwave plasma has a high frequency, thereby creating more energetic electrons than what a low frequency plasma would create [32].…”

Section: Discussionsupporting

confidence: 88%

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Kim¹,

Nam²,

Lee³

et al. 2021

Preprint

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Background: Low temperature atmospheric plasma has been studied in biomedical fields but the fluoride application effect of plasma on deciduous teeth has not been studied. This study examined the fluoride application effect of plasma devices (low frequency helium and microwave argon plasma) on the enamel surface of deciduous teeth.Methods: In the tooth specimens of the control group, only 1.23% acidulated phosphate fluoride (APF) gel was applied, whereas APF gel and plasma were applied to the specimens of the experiment group. The fluoride on the enamel surface was measured at different treatment times, and its retentivity was also observed over a 4 week period using an electron probe micro analyzer, which is a strong detector of fluoride. The study protocol was reviewed by the Institutional Review Board (IRB; PNUDH-2014-026) of Pusan National University Hospital.Results: More fluoride was measured and maintained in the experiment group than the control group, and the amount of coated fluoride increased with increasing applied frequency. A comparison of two types of plasma revealed the microwave argon plasma to have a higher application effect of fluoride than the low frequency helium plasma. This study suggests that fluoride application using plasma could be an effective and lasts longer than the method of applying only fluoride. Conclusion: The fluoride application with low temperature atmospheric plasma which is safe device is an innovative method to prevent dental caries and decrease number of visiting to dental clinic in children.

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Section: Discussionsupporting

confidence: 88%

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Kim¹,

Nam²,

Lee³

et al. 2021

Preprint

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“…Among APPJs, the use of microwave devices is interesting because of their portability and safety in terms of electric shock. It uses a relatively low input power compared with low‐frequency plasmas because a plasma source is developed based on the coaxial transmission line resonator (CTLR) . Characterization of microwave plasma jets has also been studied .…”

Section: Introductionmentioning

confidence: 99%

Characterization and Effects of Ar/Air Microwave Plasma on Wound Healing

Kim

Kang

Park

et al. 2015

Plasma Processes & Polymers

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1Using Ar/Air mixture microwave plasma, we investigated the effects of air and gas temperature on the generation of electrons, ozone (O 3 ), and nitric oxide (NO) through experiments and chemical kinetics simulation. The global model (GM) chemical kinetics simulation was used to validate and complement experimental observations. As the air percentages in Ar plasma increase, electrons are mainly generated by reactive oxygen species (ROS), but electron densities decrease. This is why plasma jet length becomes shorter with the mixture of air to Ar plasma at the same power. The profile of O 3 densities has a maximum point because these are affected by oxygen (O 2 ) molecules and gas temperature. O 3 densities increase because these are generated via recombination of atomic oxygen (O) and O 2 radicals as the air percentages increase. As the gas temperature increases, O 3 densities decrease and O 3 radicals are mainly destroyed by ROS such as O 2 À , excited O 2 , and O, although air percentages increase. NO radicals increase continually with the addition of air mixture and increase in gas temperature. With respect to biomedical applications, in the case of Ar/Air plasma treatment, it takes just 2 d, which has reduced the wound area to 30% because of faster scab formation over the wound and mRNA activation. Abundant NO radicals with ROS in Ar/aAir plasma strongly enhance IL-6 and TGF-b1, which facilitate collagen remodeling and wound recovery effectively.

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“…It has been reported that the pulse modulation technology has a great effect on plasma jet temperature and active particle concentration. [8,44,45] In this study, the microwave input power used is relatively high, and the selection of pulse parameters may not be the optimal combination. Thus, a higher temperature is observed in this study.…”

Section: Electron Density and Gas Temperature Measurementmentioning

confidence: 99%

Discharge characteristics of atmospheric pressure pulsed microwave He/N₂ plasma jet

Yang

Chen

Dai

et al. 2023

Plasma Processes & Polymers

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It is difficult to generate jet-shaped He microwave plasma jets in ambient air. In this study, a dual-channel pulsed microwave coaxial resonant discharge device is constructed. An atmospheric pressure pulsed microwave He plasma jet is formed when He passes through the central copper tube. And a spatially layered He/N 2 plasma jet is produced when He and N 2 are aerated through the central copper tube and the resonant cavity, respectively. The spatiotemporal ionization evolution

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A study on characterization of atmospheric pressure plasma jets according to the driving frequency for biomedical applications

Cited by 47 publications

References 28 publications

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Characterization and Effects of Ar/Air Microwave Plasma on Wound Healing

Discharge characteristics of atmospheric pressure pulsed microwave He/N₂ plasma jet

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A study on characterization of atmospheric pressure plasma jets according to the driving frequency for biomedical applications

Cited by 47 publications

References 28 publications

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Effective Fluoride Gel Application on Deciduous Tooth Enamel by Low Temperature Atmospheric Plasma

Characterization and Effects of Ar/Air Microwave Plasma on Wound Healing

Discharge characteristics of atmospheric pressure pulsed microwave He/N2 plasma jet

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Product

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Discharge characteristics of atmospheric pressure pulsed microwave He/N₂ plasma jet