Phosphate-based dental investment material
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United States of America Patent
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Mar 16, 2021
Grant Date -
Nov 22, 2018
app pub date -
May 17, 2018
filing date -
May 17, 2017
priority date (Note) -
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Abstract
To provide a phosphate-based dental investment material which can used for metal and press ceramic and especially can impart the lubricity to the surface of a press ceramic, and a phosphate-based dental investment material which can be subjected to a flash heating for press ceramic, can obtain sufficient the hardening expansion, and can easily remove the investment material after press molding. A phosphate-based dental investment material of the present disclosure comprising a powder material and a liquid material, wherein the powder material contains (a) magnesium oxide: 5 to 20 wt. %; (b) ammonium dihydrogenphosphate: 8 to 25 wt. % and the liquid material contains (c) aqueous solution including a cation-treated colloidal silica.
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