Surface Characterization, Antimicrobial Activity of Nonthermal Atmospheric-Pressure Plasma Jet on Polyvinyl Siloxane Impression Materials

Background and Objectives The antimicrobial efficacy of a nonthermal atmospheric-pressure plasma jet (NAPPJ) on dental impression materials was investigated. Materials and Methods Type 3 polyvinyl siloxane was used as the impression material, and air and nitrogen NAPPJ were applied. The antibacteria...

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Published in:Medicina (Kaunas, Lithuania) Lithuania), 2022-10, Vol.58 (11), p.1556
Main Authors: Choi, Yu-Ri, Yoo, Eun-Mi, Seo, Hye-Yeon, Kang, Min-Kyung
Format: Article
Language:English
Subjects:
Antimicrobial agents
Atmospheric pressure
Bacteria
Bacterial infections
Chemical properties
Clinics
Contact angle
Control
Dental materials
Dental matrices
dental polyvinyl siloxane impression material
Dental research
Dentistry
disinfection
Disinfection & disinfectants
Disinfection and disinfectants
Materials
Mechanical properties
Methods
Microorganisms
Morphology
Nitrogen
nonthermal atmospheric-pressure plasma jet
Physical properties
Plasma
Plasma jets
Siloxanes
Software
Statistical analysis
Surface chemistry
Variance analysis
Vinyl polymers
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Summary:Background and Objectives The antimicrobial efficacy of a nonthermal atmospheric-pressure plasma jet (NAPPJ) on dental impression materials was investigated. Materials and Methods Type 3 polyvinyl siloxane was used as the impression material, and air and nitrogen NAPPJ were applied. The antibacterial effect of the NAPPJ was measured using the number of colony-forming units (CFUs) and scanning electron microscopy (SEM) images of Streptococcus mutans. Surface chemical characteristics of the impression material were examined using X-ray photoelectron spectroscopy (XPS) and contact angle measurement. Additionally, physical properties were analyzed through surface roughness measurement, detail reproduction, and strain-in-compression test. Results Compared with the control group, the plasma treatment group showed ruptured bacteria membranes, destroyed bacteria structures, a significant reduction in the number of CFUs, and a significantly reduced contact angle. Further, XPS analysis showed that their surface was significantly richer in hydroxyl groups. The surface roughness, detail reproduction, and strain-in-compression results indicated no significant differences between the plasma treatment and control groups. NAPPJ treatment could remove bacteria from polyvinyl siloxane dental impression materials without changing the surface's physical properties. Conclusion Therefore, it is considered a promising method for disinfection.
ISSN:1648-9144
1010-660X
1648-9144
DOI:10.3390/medicina58111556