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Sn4(OH)6Cl2 and SnO Corrosion Products of Amalgams

Department of Biological Materials, Northwestern University, Chicago, Illinois 60611

Grayson W. Marshall, JR

Department of Biological Materials, Northwestern University, Chicago, Illinois 60611

Although the corrosion characteristics of dental amalgam have been of considerable interest to dental researchers, it has been difficult to identify the products which form in vivo. This report demonstrates that Sn₄(OH)₆Cl ₂ and SnO are formed in vivo and in vitro. The Sn-Cl product is the predominant phase formed by corrosion-induced changes of the Sn₈Hg phase of amalgam. It is present in conventional and, in smaller amounts, Cu-rich amalgam restorations.

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Journal of Dental Research, Vol. 59, No. 5, 820-823 (1980)
DOI: 10.1177/00220345800590051201


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