D'Arcet's metal

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[J. D'Arcet (1727–1801), French physician] An alloy of tin lead and bismuth which was historically used as a restorative material in its fused state. It was abandoned because of the high working temperature at which the metal fused (212°F; 100°C), which caused pain and pulpal damage and the shrinkage from the cavity walls on cooling. The metal has also been used in the past as a low-fusing die material.

Subjects: Dentistry.

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