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The effect of pouring time and storage condition on the accuracy of irreversible hydrocolloid impressions. Saudi Dent J.
Maryan, Disinfection procedures: their effect on the dimensional accuracy and surface quality of irreversible hydrocolloid impression materials and gypsum casts, Dent Mater., 18(2), 103-110 (2007).
However, there seems to be general agreement that the casts should be poured immediately after the impressions are removed from the mouth to obtain maximum accuracy.3-6 Irreversible hydrocolloid impression material has dimensional changes as a result of synersis or evaporation of water when exposed to air.
Primary impressions of edentulous maxilla and mandible were recorded in edentulous stock trays in irreversible hydrocolloid impression material (Algin major).