http://www.cnr.it/ontology/cnr/individuo/prodotto/ID200628

Electrical properties of resin monomers used in restorative dentistry. (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Electrical properties of resin monomers used in restorative dentistry. (Articolo in rivista) (literal)

Anno

2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.dental.2012.05.009 (literal)

Alternative label

Breschi M, Fabiani D, Sandrolini L, Colonna M, Sisti L, Vannini M, Mazzoni A, Ruggeri A, Pashley DH, Breschi L. (2012)
Electrical properties of resin monomers used in restorative dentistry.
in Dental materials
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Breschi M, Fabiani D, Sandrolini L, Colonna M, Sisti L, Vannini M, Mazzoni A, Ruggeri A, Pashley DH, Breschi L. (literal)

Pagina inizio

1024 (literal)

Pagina fine

1031 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.sciencedirect.com/science/article/pii/S0109564112001704 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

28 (literal)

Rivista

Dental materials (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

9 (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)
PubMe (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Department of Electrical Engineering, University of Bologna, Italy; Department of Civil, Environmental and Materials Engineering, University of Bologna, Italy; Department of Medical Sciences, Unit of DentalSciences and Biomaterials, University of Trieste, Trieste, Italy; Department of SAU&FAL, University of Bologna, Bologna, Italy; Department of Oral Biology, College of Dental Medicine, Georgia Health Sciences University, Augusta, GA, USA; IGM-CNR, Unit of Bologna c/o IOR, Bologna, Italy (literal)

Titolo

Electrical properties of resin monomers used in restorative dentistry. (literal)

Abstract

OBJECTIVES: The application of an electric field has been shown to positively influence the impregnation of the resin monomers currently used in dentin bonding systems during hybrid layer formation. This study presents an experimental characterization of the electrical properties of these monomers with the aim of both correlating them to their chemical structures and seeking an insight into the mechanisms of the monomer migration under an applied electric field. METHODS: Some common monomers examined were TEGDMA (triethyleneglycoldimethacrylate), HEMA (2-hydroxyethyl methacrylate), UDMA (urethane dimethacrylate), 2-MP (bis[2-(methacryloyloxy)ethyl] phosphate, TCDM di(hydroxyethyl methacrylate) ester of 5-(2,5-dioxotetrahydrofurfuryl)-3-methyl-3-cyclohexenyl-1,2-dicarboxylic anhydride) and Bis-GMA [2,2-bis(4-2-hydroxy-3-methacryloyloxypropoxyphenyl)propane]. A customized cell produced for the measurement of the electrical properties of monomers was manufactured and electrical conductivity and permittivity of resin monomers were measured. RESULTS: The permittivity of the tested monomers is largely affected by electrical frequency. The large values of permittivity and dielectric losses observed as frequency decreased, indicate a dominant effect of ionic polarization, particularly evident in materials showing the highest conductivity. Permittivity and conductivity of the tested monomers showed a similar behavior, i.e. materials with the lowest permittivity also show small values of conductivity and vice versa. SIGNIFICANCE: The results of the present study revealed a good correlation between electrical properties and Hoy solubility parameters and, in particular, the higher the polar contribution (polar forces plus hydrogen bonding) the higher the permittivity and conductivity. The most relevant outcome of this study is that the electrophoretic mechanism prevails on the electroendoosmotic effect in determining the monomer migration under the application of electric fields. Copyright © 2012 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. (literal)

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