The setting time of a mix of dental stone ends when the:

Question

Quizplus · Accepted Answer

Final setting time occurs after the exothermic reaction (a chemical change accompanied by the liberation of heat) and the final product can no longer be manipulated without fracture. Working time ends when the stone no longer flows. If the model is separated from the impression before the final set, the final product may be fractured. When the material is properly mixed it is the consistency of sour cream.

The Setting Time of a Mix of Dental Stone Ends