Corrosion resistance of two metals namely 18 carat gold and mild steel (MS) has been evaluated in artificial saliva in the presence of Dglucose. Potential dynamic polarization study has been used to investigate the corrosion behaviour of two metals. The order of corrosion resistance of metals in artificial saliva in the presence of D-glucose is 18 carat gold > MS. The decrease order of corrosion resistance of metals in artificial saliva only is: 18 carat gold>mild steel