dental02.jpg (11342 bytes)Fundamentals of
Dental Materials

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Gypsum Products, Dental Waxes, and Impression Materials

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Alginate-type hydrocolloid impression materials are influenced by syneresis, imbibition, strain, and stress in the same way as the agar-type materials. Hence, for the most accurate results, the impression should be fixed and the cast poured soon after the impression is removed from the mouth. If the impression must be stored for a short period of time, it should be placed in a humidor in which the relative humidity is 100 percent.

David L. Heiserman, Editor

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Revised: May 22, 2017