Electrochemical behaviour of dental amalgam in natural, artificial saliva and in 0.90 wt.% NaCl solution

FESEM and X-ray diffraction studies were carried out to assess the microstructure and phases present in a Dispersalloy admix type Ag-Sn-Cu dental amalgam. Electrochemical behaviour of the amalgam was assessed by electrochemical impedance spectroscopy (EIS) measurements in natural saliva, artificial...

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Bibliographic Details
Published in:Corrosion science 2018-04, Vol.133, p.217-230
Main Authors: Dutta Chowdhury, Nivedita, Ghosh, K.S.
Format: Article
Language:English
Subjects:
Body fluids
Constant phase element (CPE)
Copper
Corrosion
Dental amalgam
Dental amalgams
Dental care
Diffraction
Dispersion
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrochemical impedance spectroscopy (EIS)
Microstructure
Saliva
Saliva and saline solution
Silver
Sodium chloride
Tin
X-ray diffraction
XRD
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Summary:FESEM and X-ray diffraction studies were carried out to assess the microstructure and phases present in a Dispersalloy admix type Ag-Sn-Cu dental amalgam. Electrochemical behaviour of the amalgam was assessed by electrochemical impedance spectroscopy (EIS) measurements in natural saliva, artificial saliva and 0.90 wt.% NaCl solution. EIS was also measured of the amalgam exposed for varying time in 0.90 wt.% NaCl solutions. Results of the impedance measurements showed that the 0.90 wt.% NaCl solution is more corrosive than saliva. The rough and porous surfaces of dental amalgam are energetically inhomogeneous which contribute frequency dispersion of impedance response.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2018.01.015