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When you have a dental crown, it is less common to have a cavity on the tooth because it is protected. However, the place where the crown meets the tooth can still get a cavity, that is why hygiene is important even though a crown is on the tooth, especially flossing. The two ways to get a cavity under a crown are:

  1. A cavity started between the crown and the tooth at the gum level.
  2. There was a cavity left on the tooth when the crown was put (more rare).
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18y ago

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