Dental compositions of improved properties
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United States of America Patent
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May 19, 1981
Grant Date -
N/A
app pub date -
Apr 28, 1980
filing date -
Apr 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dental gypsum composition having good pourable consistency and controlled mixing and setting characteristics comprising a mixture of calcium sulfate hemihydrate (calcined gypsum), a condensation product of formaldehyde with a cyclic hydrocarbon containing sulfonic acid groups, and magnesium aluminum silicate. When dispersed in water and cured, this composition provides set products having improved hardness and strength properties.
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