<prompt> Polishing agent for amalgamTin oxideIron oxideAluminaSilica  <response>: TIN OXIDE:This extremely fine abrasive material is used extensively as a polishing agent for polishing teeth and metallic restorations such as dental amalgams in the mouth. It is mixed with water, alcohol or glycerin to form a mildly abrasive paste.Phillips Science of Dental Material 12th Edition Page. 245-246. 