Dental refractory model materials

Plastic and nonmetallic article shaping or treating: processes – Dental shaping type

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106 35, 264 19, 264 20, 264222, 4332021, 4332031, 4332221, A61C 510, A61C 1300, A61C 13083

Patent

active

052982009

ABSTRACT:
A dental refractory model material comprises as powdery components 5 to 20% by weight of a soluble phosphate, 5 to 20% by weight of magnesium oxide and 10 to 50% by weight of at least one selected from the group of alumina, zirconia, fused quartz, mullite, spinel and cordierite with the balance being crystalline quartz and crystobalite. The refractory model material also includes a liquid component such as a colloidal silica dispersion.

REFERENCES:
patent: 2314626 (1943-03-01), Neiman
patent: 3473599 (1969-10-01), Rose
patent: 3617315 (1971-11-01), Vickery
patent: 3923534 (1975-12-01), Cassidy
patent: 4243420 (1981-01-01), Sakai
patent: 4591385 (1986-05-01), Pearsall
patent: 4814011 (1989-03-01), Kamohara
patent: 4909847 (1990-03-01), Ohi
patent: 4911759 (1990-03-01), Ohi
patent: 5013363 (1991-05-01), Hakamatsuka
Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, vol. 7, John Wiley and Sons, Jul. 12, 1988, pp. 471-2.

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