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The deterioration of a metal by chemical or electrochemical reaction with its environment. Amalgam corrosion can occur in the oral environment because of an interreaction between chloride ions present in the saliva and the amalgam alloy, resulting in both anodic and cathodic reactions. The extent of the corrosion may be influenced by such factors as the composition of the alloy, the particle size and form, the mercury content, the nature of the gamma-2 phase, and the degree of surface finishing. Corrosion products at the amalgam–tooth interface are considered to seal the gap between the restoration and the tooth and minimize microleakage.

Amalgam corrosion

Subjects: Dentistry.

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