Silver-loaded nanoparticles affect ex-vivo mechanical behavior and mineralization of dentin
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Silver-loaded nanoparticles affect ex-vivo mechanical behavior and mineralization of dentin

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Silver-loaded nanoparticles affect ex-vivo mechanical behavior and mineralization of dentin

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dc.contributor.author Toledano Pérez, Manuel es
dc.contributor.author Sánchez Aguilera, Fátima es
dc.contributor.author Cabello Malagón, Inmmaculada es
dc.contributor.author Toledano-Osorio, M. es
dc.contributor.author Osorio Ruiz, E. es
dc.contributor.author López López, Modesto Torcuato es
dc.contributor.author Garcia Godoy, Franklin es
dc.contributor.author Lynch, Franklin es
dc.contributor.author Osorio Ruiz, R. es
dc.date.accessioned 2019-04-15T10:50:10Z
dc.date.available 2019-04-15T10:50:10Z
dc.date.issued 2019 es
dc.identifier.uri http://hdl.handle.net/10550/69967
dc.description.abstract The aim was to evaluate the effect of silver loaded nanoparticles (NPs) application on the triboscopic, crystallographic and viscoelastic properties of demineralized dentin. Polymethylmetacrylate-based NPs and Ag loaded NPs were applied on demineralized dentin. Treated and untreated surfaces were probed by a nanoindenter to test viscoelasticity, and by atomic force microscopy to test nanoroughness and collagen fibril diameter. X-ray diffraction and transmission electron microscopy through selected area diffraction and bright-field imaging were also used. Dentin treated with Ag-NPs attained the lowest complex modulus, and the highest tan delta values after 7 days of storage. Dentin treated with undoped-NPs achieved the lowest nanoroughness and the greatest collagen bandwidths among groups. Crystals were identified as hydroxyapatite with the highest crystallographic maturity and crystallite size in dentin treated with undoped-NPs. Texture increased in all samples from 24 h to 7 d, except in dentin surfaces treated with Ag-NPs at 310 plane. Polyhedral, block-like, hexagonal or plate-like shaped apatite crystals constituted the bulk of minerals in dentin treated with Ag-NPs, after 7 d. Polyhedral or rounded/drop-like, and polymorphic in strata crystal apatite characterized the minerals when undoped-NPs were used, with more crystalline characteristics after 7 d than that found when Ag-NPs were applied. Ag-NPs application did not improve the mechanical performance of dentin and did not produce dentin remineralization. However, energy was dissipated through the dentin without showing stress concentration; contrary was occurring at dentin treated with undoped-NPs, that provoked bridge-like mineral deposits at the dentin surface. Ag-NPs application did not enhance the mechanical properties of cervical dentin, though the energy dissipation did not damage the dentin structure. Remineralization at dentin was not produced after Ag-NPs application, though improved crystallinity may lead to increase stability of the apatite that was generated at the dentin surface. es
dc.source Toledano Pérez, Manuel ; Sánchez Aguilera, Fátima ; Cabello Malagón, Inmmaculada ; Toledano-Osorio, M. ; Osorio Ruiz, E. ; López López, Modesto Torcuato ; Garcia Godoy, Franklin ; Lynch, Franklin ; Osorio Ruiz, R.. Silver-loaded nanoparticles affect ex-vivo mechanical behavior and mineralization of dentin. En: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, 24 2 2019: 17- es
dc.title Silver-loaded nanoparticles affect ex-vivo mechanical behavior and mineralization of dentin es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/medoral.22885 es

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