关键词: 牙科合金, 电化学腐蚀, 防护

Abstract: As dental alloys are used more and more widely in the dental field，adverse reactions caused by its corrosion are also increasing. The main corrosion form of dental alloys is electrochemical corrosion，and the influencing factors are alloy composition，pH，medium composition and different metals. Many researches have been done to improve the corrosion resistance of dental alloys，especially in the field of the composition change and surface modification.

Key words: dental alloys, electrochemical corrosion, protection