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undercut

Pronunciation: un'der-kut

Definition:

  1. That portion of a tooth that lies between the survey line (height of contour) and the gingivae.
  2. The contour of a cross-section of a residual ridge or dental arch that would prevent the insertion of a denture.
  3. The contour of a flasking stone that interlocks in such a way as to prevent the separation of the parts.
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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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