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J Dent Res 54(4): 759-763, 1975
© 1975 International and American Associations for Dental Research
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Impedance of Amalgam-Dentin Interface in Cat Tooth

L. T. PHI 1 and K. H. REID 1

1 Department of Physiology and Biophysics, University of Louisville School of Medicine, Louisville, Kentucky 40201, USA

The impedance between two amalgam electrodes implanted in the maxillary canine of a cat was measured at various frequencies between 0.02 kilohertz (kHz) and 100 kHz. When plotted on the X-R plane as a function of frequency, two types of impedance loci were obtained. One resembled a circular arc at low frequencies, whereas the other was parabolic or exponential in form. The circular-arc loci are similar to those calculated from membrane models. The parabolic or exponential loci are predicted by a polyelectrolyte model.

Submitted on August 2, 1974
Accepted on April 9, 1975






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