Gypsum product having least expansion:
Correct Answer: Die stone
Description: DENTAL STONE, HIGH STRENGTH (TYPE IV)
The principal requisites for a die material are strength, hardness, and minimal setting expansion. To obtain these properties, modified α-hemihydrate is used. The cube-shaped particles and the reduced surface area produce such properties without undue thickening of the mix. This material is also called die stone.
Category:
Dental
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