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Pronunciation: ak′ses


  1. A way or means of approach or admittance.
  2. In dentistry, the space required for visualization and for manipulation of instruments to remove decay and prepare a tooth for restoration.
  3. The opening in the crown of a tooth required to allow adequate admittance to the pulp space to clean, shape, and seal the root canal(s).

Synonym(s): access opening

[L. accessus]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.