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Amalgam (Dimensional Stability (Contraction favoured when there is less…
Amalgam
Dimensional Stability
Severe contraction leads to microleakage, plaque accumulation and secondary caries
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When alloy and mercury is mixed, contraction occurs because particles begin to dissolve as Y1 grows
As Y1 crystals grow, they impinge against each other, producing outward pressure that opposes the contraction if there is sufficient liquid mercury to provide a plastic matrix
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Introduction
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Made up of silver, tin, mercury, copper and sometimes zinc
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