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. 1984 Jul;11(4):351-9.
doi: 10.1111/j.1365-2842.1984.tb00586.x.

The in vivo corrosion of Dispersalloy

D McTigue, C Brice, C R Nanda, N K Sarkar

The in vivo corrosion of Dispersalloy

D McTigue et al. J Oral Rehabil. 1984 Jul.

Abstract

The in vivo corrosion of Dispersalloy amalgam restorations was characterized by scanning electron microscopy and energy dispersive X-ray analysis. It was observed that the corrosion of CuSn resulted in pitting on the restoration surface. Corrosion of Sn-rich grain boundaries led to intergranular separation of gamma 1 grains. The tin released through corrosion reacted with Ca, P, Cl and O forming various insoluble complexes on the external surface, at the tooth-amalgam interface, and within the interior of the restoration. The demineralization of the amalgam-adjacent margin has been attributed to corrosion.

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