In vitro study on how cold plasma affects dentin surface characteristics

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dc.creatorHenrico Badaouistrazzi-Sahyon
dc.creatorThaís Yumi Umeda Suzuki
dc.creatorGlívia Queiroz Lima
dc.creatorJuliana Aparecida Delben
dc.creatorBruno Mena Cadorin
dc.creatorVanessa do Nascimento
dc.creatorSimone Duarte
dc.creatorPaulo Henrique dos Santos
dc.date.accessioned2023-04-19T20:46:13Z
dc.date.accessioned2025-09-08T23:44:04Z
dc.date.available2023-04-19T20:46:13Z
dc.date.issued2021-11
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1016/j.jmbbm.2021.104762
dc.identifier.issn18780180
dc.identifier.urihttps://hdl.handle.net/1843/52286
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of the Mechanical Behavior of Biomedical Materials
dc.rightsAcesso Restrito
dc.subjectArgon
dc.subjectOxygen
dc.subjectPlasma
dc.subjectSurface properties
dc.subjectWettability
dc.subjectDentin
dc.subjectMicroscopy electron scanning
dc.titleIn vitro study on how cold plasma affects dentin surface characteristics
dc.typeArtigo de periódico
local.citation.epage10
local.citation.spage01
local.citation.volume123
local.description.resumoPurpose Studies evaluating different features of cold plasma action on dentin surface characteristics are lacking. Thus, this in vitro study aimed to determine the effect of cold plasma under different protocols of exposure time, distance to plasma source, and the association of argon gas with distinct concentrations of oxygen on the wettability, surface energy, total free interaction energy, surface roughness, morphology and chemical composition of dentin. Material and methods One hundred and twenty-five bovine dentin samples were used and divided into twenty-five groups according to the exposure time to plasma (15, 30, or 60 s); distance between plasma source and dentin surface (3 or 6 mm); argon gas without plasma generation; and plasma generated by argon gas and association of argon gas with distinct concentrations of oxygen (2 % or 3 %) (n = 5). Contact angle (θ), surface energy (γs) and total free interaction energy (ΔG) were measured using a goniometer (Krüss), while surface roughness (Ra) was evaluated by a profilometer (Mitutoyo). Representative samples were submitted to scanning electron microscopy (JEOL) to ilustrate the morphology and chemical composition of dentin. Data comparing control group with all experimental groups were submitted to ANOVA followed by Tukey's test (α = .05). Data comparing oxygen gas action at different concentrations and argon gas on dentin characteristics were submitted to non-parametric Kruskal–Wallis test, followed by Dunn test for comparison between the groups and methods (α = 0.05). Results In general, argon gas without plasma generation promoted no significant difference on dentin surface characteristics compared to control group (P > .05), differently for the cold plasma that significantly reduced contact angle values and increased total free interaction energy of dentin surface (P < .05). Overall, feeding of oxygen at distinct concentrations promoted significant difference on dentin surface characteristics compared to control group (P < .05). Exposure time and distance protocols interfered with contact angle, surface energy and total free interaction energy analyses for each gas. There was no significant difference on surface roughness (P > .05), morphology and chemical composition of dentin submitted to argon gas, cold plasma, and distinct concentrations of oxygen. Conclusion In conclusion, plasma generated by argon gas and its feeding with 2 % and 3 % oxygen gas improved the dentin surface characteristics about wettability, surface energy and total free interaction energy. Such treatments preserved the surface roughness, morphology and chemical composition of dentin. The protocols of groups Ar-6mm-15sec, ArO2-3mm-30sec and ArO3-3mm-15sec are recommended for improvement of dentin surface characteristics
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S1751616121004057#:~:text=In%20conclusion%2C%20plasma%20generated%20by,and%20chemical%20composition%20of%20dentin.

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