Evaluation of the effect of water-uptake on the impedance of dental resins

Biomaterials
Bakul WadgaonkarDavid H Pashley

Abstract

Electrical impedance spectroscopy (EIS) offers a quantitative method of measuring the stability of resin films in aqueous solution over time. The purpose of this study was to measure the EIS of five experimental dental adhesive films (ca. 17 microm thick) of increasing hydrophilicity (ranked by their Hoy's solubility parameters), and how much these values change over 3 weeks in aqueous buffer. The resin films were placed in a U-shaped chamber and a pair of Ag-AgCl electrodes was used for EIS. The EIS results were confirmed by immersing the films in 50% AgNO3 for 24 h to trace the distribution of any water absorption into the resins by TEM observations. The resistance (Rr) of the resins 1-4 films increased most during the first day, and varied from 1x10(11) ohm for resin 1, to 40Omega for resin 5 at day 1. The day 1 Rr values of resins 1-4 were inversely proportional to their Hoy's solubility parameter for hydrogen bonding forces. Electrical impedance values of resins 1-3 and 5 varied widely but were relatively constant over time, while those of resin 4 decreased more than 99% from day 1 to 21 (p<0.05). Capacitance (Cr) of films of resins 1-4 all increased over the first day and then were relatively unchanged over the 20 days (e...Continue Reading

References

Jun 1, 1988·Journal of Dental Research·F A Rueggeberg, R G Craig
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Aug 27, 2002·Biomaterials·Friederike von BurkersrodaAchim Göpferich
Nov 27, 2002·Journal of Dentistry·Nelly Pradelle-PlassePierre Colon

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Citations

Mar 3, 2010·Annals of Biomedical Engineering·Paulette SpencerJ Lawrence Katz
Sep 22, 2009·Journal of Materials Science. Materials in Medicine·J I JohnsD Skrtic
Feb 20, 2010·Operative Dentistry·Alessandra ReisAlessandro D Loguercio
Aug 24, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Cyril VillatPierre Colon
Apr 29, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·N HiraishiD H Pashley
Jul 8, 2009·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Jong-Gu ParkPaulette Spencer
Jun 30, 2007·Journal of Biomedical Materials Research. Part a·Fernanda T SadekFranklin R Tay
Mar 13, 2008·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Qiang YePaulette Spencer
Aug 3, 2007·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Jeremy SwordRobert Rodgers
Mar 15, 2008·Journal of Applied Polymer Science. Applied Polymer Symposium·Jong-Gu ParkPaulette Spencer
Feb 17, 2010·European Journal of Oral Sciences·Masanori HashimotoHiroki Ohno
Jul 6, 2011·Journal of Dentistry·Alessandro Dourado LoguercioAlessandra Reis
Oct 23, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Matej ParZrinka Tarle
Apr 6, 2021·BioMed Research International·Mona Aly AbbassyAhmed Samir Bakry

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