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6 August, 04:20

Tooth fillings are often made of gold or porcelain because those materials are not what?

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  1. 6 August, 05:02
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    Tooth fillings are often made of gold or porcelain because these materials are

    nonreactive means that they don't corrode or rust and they are resistible to staining

    Their thermal conductibility is low

    chemically similar to teeth
  2. 6 August, 05:35
    0
    they do not rust or corrode and they don't have led in them. Porcelain and gold are also used because they have a high stain resistance.
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