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Correlation of shear and dielectric ion viscosity of dental resins - Influence of composition, temperature and filler content

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dc.title Correlation of shear and dielectric ion viscosity of dental resins - Influence of composition, temperature and filler content en
dc.contributor.author Steinhaus, Johannes
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Haenel, Thomas
dc.contributor.author Selig, Daniela
dc.contributor.author Duvenbeck, Fabian
dc.contributor.author Moeginger, Bernhard
dc.relation.ispartof Dental Materials
dc.identifier.issn 0109-5641 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2016
utb.relation.volume 32
utb.relation.issue 7
dc.citation.spage 899
dc.citation.epage 907
dc.type article
dc.language.iso en
dc.publisher Elsevier
dc.identifier.doi 10.1016/j.dental.2016.03.015
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0109564116300094
dc.subject Visible light curing resin en
dc.subject Resin based composite en
dc.subject Dielectric Analysis en
dc.subject Ion viscosity en
dc.subject Rheology en
dc.subject Shear viscosity en
dc.subject Filler content en
dc.description.abstract Objective. Shear viscosity and ion viscosity of uncured visible light-curing (VLC) resins and resin based composites (RBC) are correlated with respect to the resin composition, temperature and filler content to check where Dielectric Analysis (DEA) investigations of VLC RBC generate similar results as viscosity measurements. Methods. Mixtures of bisphenol A glycidyl methacrylate (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA) as well as the pure resins were investigated and compared with two commercial VLC dental resins and RBCs (VOCO, Arabesk Top and Grandio). Shear viscosity data was obtained using a Haake Mars III, Thermo Scientific. Ion viscosity measurements performed by a dielectric cure analyzer (DEA 231/1 Epsilon with Mini IDEX-Sensor, Netzsch-Gerfiteb au). Results. Shear viscosity depends reciprocally on the mobility of molecules, whereas the ion viscosity also depends on the ion concentration as it is affected by both ion concentration and mixture viscosity. Except of pure TEGDMA, shear and ion viscosities depend on the resin composition qualitatively in a similar manner. Furthermore, shear and ion viscosities of the commercial VLC dental resins and composites exhibited the same temperature dependency regardless of filler content. Application of typical rheological models (Kitano and Quemada) revealed that ion viscosity measurements can be described with respect to filler contents of up to 30 vol.%. Significance. Rheological behavior of a VLC RBC can be characterized by DEA under the condition that the ion concentration is kept constant. Both methods address the same physical phenomenon- motion of molecules. The proposed relations allows for calculating the viscosity of any Bis-GMA-TEGDMA mixture on the base of the viscosities of the pure components. This study demonstrated the applicability of DEA investigations of VLC RBCs with respect to quality assurance purposes. (C) 2016 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. en
utb.faculty University Institute
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1006558
utb.identifier.obdid 43875207
utb.identifier.scopus 2-s2.0-84992303571
utb.identifier.wok 000377296400009
utb.identifier.pubmed 27130611
utb.identifier.coden DEMAE
utb.source j-wok
dc.date.accessioned 2016-08-09T14:03:00Z
dc.date.available 2016-08-09T14:03:00Z
dc.description.sponsorship Federal Republic of Germany, Ministry of Education and Research [17081X10]; Operational Program Research and Development for Innovations by the European Regional Development Fund (ERDF); national budget of Czech Republic [CZ.1.05/2.1.00/03.0111]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Steinhaus, Johannes
utb.contributor.internalauthor Hausnerová, Berenika
utb.contributor.internalauthor Haenel, Thomas
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