Electrochemical Behavior Study of KF in Artificial Saliva Mediated by GCE Using Cyclic Voltammetry

Abstract

A new study used potassium fluoride (KF) in different concentrations (2% and 5%), one of the components in the complete denture as supported material. The study aims to find the electrochemical analysis by cyclic voltammetric (CV) technique of the physical properties of this material and the influence in artificial saliva (AS) by oxidation–reduction peak current in the oral cavity. This study used a glassy carbon electrode (GCE) as a working electrode, Ag/AgCL as a reference electrode, and platinum wire as an auxiliary electrode in the cyclic voltammetry cell. Different physical properties such as concentration, pH, scan rate, and reproducibility study were used in the potential-state. The results showed two oxidation peaks current at 1.4 and 0.75 Volt characterize to the artificial saliva and KF respectively, and one reduction peak current at -0.5 Volt for KF. All peaks were enhanced by increasing the concentrations and scan rates that indicate the study in the right response. Using different pH, the oxidation peak of KF disappeared in alkaline pH and enhanced in an acidic medium, so the KF ions act as an oxidative reagent in artificial saliva of acidic pH, and antioxidant in alkaline pH at a limited concentration of KF in the cavity of the mouth. The low concentration of KF (2%) used in the component of total denture is more favourable than the high concentration (5%). In addition, it is better to store the total denture in an alkaline solution after use to avoid any damage to the mouth cells.