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Durable
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High compressive strength
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Insoluble in the fluids of mouth
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Adaptability to walls of preparation
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Least time consuming to place
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Ability to corrode-à decreased microleakage
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Ability to take polish
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Silver:
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Increases strength
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Increase setting expansion
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Decreases flow
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Improves color
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Setting time decreased
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Resist tarnish and corrosion