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银汞合金是目前口腔科应用最广泛、性能较理想的后牙充填材料,它是由银锡合金粉和汞研磨而成的一种汞合金。汞是对人体有害的金属。口腔科医护人员长期与汞接触,如不注意防护,很可能由于汞的吸收而导致慢性汞中毒。因此,防护汞污染是口腔科卫生防护的一个重大问题。一、汞污染及对人体的危害 1、汞的污染:银汞合金在研磨和充填过程中,能产生汞蒸气,而且在配料、研磨、挤压余汞时可能将汞酒落在桌面、地面或粘在器械用具上,汞蒸气随空气移动,很容易吸附在工作室的墙壁、天花板、地面和用具上,并成为经常不断的汞污染源。
Silver amalgam is currently the most widely used stomatology, the performance of the ideal posterior filling material, it is made of silver tin alloy powder and mercury grinding amalgam. Mercury is a metal that is harmful to the human body. Long-term exposure of stomatologists to mercury, if not guarded, is likely to result in chronic mercury poisoning due to mercury absorption. Therefore, the protection of mercury pollution is a major issue in the health protection of dentistry. First, the mercury pollution and harm to human body 1, mercury pollution: silver amalgam during grinding and filling process, can produce mercury vapor, and in the ingredients, grinding, squeezing residual mercury mercury may fall on the desktop, the ground Or stuck to appliances, mercury vapor moves with the air and easily adsorbs to the studio walls, ceilings, floors and appliances and becomes a constant source of mercury contamination.