{"id":264,"date":"2025-08-25T18:07:09","date_gmt":"2025-08-25T16:07:09","guid":{"rendered":"https:\/\/sites.unica.it\/superfici\/?page_id=264"},"modified":"2025-08-25T18:07:09","modified_gmt":"2025-08-25T16:07:09","slug":"influence-of-saliva-composition","status":"publish","type":"page","link":"https:\/\/sites.unica.it\/superfici\/influence-of-saliva-composition\/","title":{"rendered":"Influence of saliva composition"},"content":{"rendered":"\n<p>The composition of natural saliva is strongly variable and unstable outside the oral cavity, therefore corrosion tests are usually performed in artificial saliva solutions. In this study the effect of the composition of various saliva solutions <strong>on the corrosion behavior of a CuZn37 <\/strong>alloy, exposed for 1, 3, and 16\u2009h to the solutions, is investigated by using electrochemical measurements, optical microscopy, and X-ray photoelectron spectroscopy (XPS). The solutions investigated in this study are: Darvell, Carter-Brugirard, and SALMO, selected for their composition that mainly differs in the organic compounds&#8217; content. Electrochemical measurements show that the open circuit potential and the polarization resistance increase with exposure time in the solutions, indicating a decrease in the corrosion rate. The corrosion rate (\u00b5m\/year) in the Darvell solution is found to be two times higher than the other artificial saliva formulations and varies in the order: Darvell\u2009&gt;\u2009Carter-Brugirard\u2009&gt;\u2009SALMO. These data suggest that the presence of different organic compounds as ligands might limit the formation of a stable protective surface film as confirmed by XPS surface analyses.<\/p>\n\n\n\n<p class=\"has-foreground-color has-text-color has-link-color wp-elements-f76ff5a54effa6f32f04e22a87d53dfb\">Publication: D. Biggio, B. Elsener, D. Atze<a href=\"https:\/\/onlinelibrary.wiley.com\/authored-by\/Atzei\/Davide\">i<\/a>,\u00a0A. Rossi,\u00a0M. Fantauzzi, The effect of the saliva formulation on brass corrosion, Materials and Corrosion 74 (2023) 269 &#8211; 276. doi:10.1002\/maco.202213476<br><br><br><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The composition of natural saliva is strongly variable and unstable outside the oral cavity, therefore corrosion tests are usually performed in artificial saliva solutions. In this study the effect of the composition of various saliva solutions [&hellip;]<\/p>\n","protected":false},"author":335,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-264","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/users\/335"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/comments?post=264"}],"version-history":[{"count":1,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/264\/revisions"}],"predecessor-version":[{"id":265,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/264\/revisions\/265"}],"wp:attachment":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/media?parent=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}