Study of the inhibitory effect of the Jasminum sambac extract on the corrosion of dental amalgam in saliva media

Several inhibitors synthesized in the laboratory allowed to significantly reduce the corrosion of amalgam and alloys in artificial saliva. however,their high toxicity and their impact on the environment have encouraged the useof extract of plants as a new generation of inhibitors like the jasminium sambac extract,which are characterized by a high inhibitory efficiency of metal alloys and amalgam in salivary environment and secondly by their ecological effects,respect to the standards of health and environment. the aim of this paper is to study the effect of the extract of jasminum sambac on the corrosion of dental amalgam in saliva medium,we studied the behavior of this amalgam in the presence and absence of the extract. the electrochemical study based on the layout of the current-potential curves has allowed us to determine the inhibition efficiency of the extract of jasminum sambac. the gravimetric method was used,after immersion of the amalgam in the medium for one week,the corrosion rate was calculated. the weight loss measurement shows that the maximum efficiency of 100% is obtained at a concentration of 0.33 g/ l. the results obtained by gravimetric measurement were confirmed by analysis of the surface by scanning electron microscopy,which showed the absence of attack signs on the surface in the presence of extract and adsorption of the inhibitor on the surface of amalgam.