undercut
Pronunciation: ŭn′dĕr-kŭt
Definition:
- That portion of a tooth that lies between the survey line (height of contour) and the gingivae.
- The contour of a cross-section of a residual ridge or dental arch that would prevent the insertion of a denture.
- The contour of a flasking stone that interlocks in such a way as to prevent the separation of the parts.
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Examples: glitazone, GI cocktail, etc.

