countercast

noun

1. A piece made to fit into a cast.

   “The countercast is articulated with the working cast, luted together, and mounted on a suitable articulator, providing access to the die stumps from the base of the cast.”

   “If there is no tooth distal to the prothetic restoration, the stone countercast must be extended to the other quadrant to obtain better stability.”

   “Another cumbersome procedure involves drilling and screwing a metal dummy eye into the countercast while it is held in the sculpting material”

   “This problem was addressed by making a new impression with a tissue conditioner to improve the fit. After immersion in super-hard plaster the countercast was made to obtain a stone part like a flask box”

   “After surgical wounds had fully healed, during several sittings a number of precise casts and countercasts were fashioned.”