Copper/aluminum alloys are largely utilized in odontological restorations because they are less expensive than gold or platinum. However. tarnishing and important corrosion in intrabuccal prostheses made with copper/aluminum alloys after 28 days of use have been reported. Several kinds of food and beverage may attack and corrode these alloys. https://allfixelectricales.shop/product-category/aluminium-spill-tray-liner/