Study the Effect of Cyperus Rotundus Extracted as Mouthwash on the Corrosion of Dental Amalgam

2nd International Scientific Conference (Pure Sciences, Brilliant Creativity and Renewed Building)

Abbas, Hayfaa Abdulameer^1 ; Saleh Alsaade, Khulood Abid^1 ; Yousif Almashhdan, Haider Abdulkareem^2

University of Baghdad, College of Science, Department of Chemistry, Iraq^1

AlRasheed University College, Dentistry Department, Iraq^2

关键词: Artificial saliva;    Concentration ranges;    Corrosion potentials;    Cyclic polarization;    Cyperus rotundus;    Inhibitory effect;    Saliva;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/571/1/012074/pdf
DOI  :  10.1088/1757-899X/571/1/012074

来源: IOP

【 摘 要 】

Many extracted material were used as mouthwash to settle different kinds of oral fungi and bacteria. In this study an extractive of Cyperus rotundus plant E.C.R. which is very active as a mouthwash, was used in concentration range (10-25) ppm in artificial saliva at pH=6.4 and temperature range (288-318) K, to study it's inhibitory effect on the corrosion of dental amalgam. Potentiostatic and cyclic polarization were used to follow this study. The presence of E.C.R. lead to shift the corrosion potential to the active direction and decreased the corrosion rate to about 98.87%, the inhibition action of E.C.R. resulting from the adsorption of C.R.E. layer between amalgam and saliva as FTIR spectrums shows, where the variety of FTIR adsorption of many group were noticed for the free E.C.R. and adsorbed E.C.R. layer. Thermodynamic of adsorption, corrosion kinetic parameters were also investigated.