Refractory die for making porcelain dental prosthesis and a ther

Details Refractory die for making porcelain dental prosthesis and a ther Refractory die for making porcelain dental prosthesis and a ther

1988-11-14

1990-04-17

Housel, James C.

Static molds

Dental prosthodontic type

249175, 249177, 264 19, 433 74, 433211, 433213, A61C 1334

Patent

active

049173472

ABSTRACT:
Phosphate bonded investments with solid high temperature dowels or pins for the preparation or making of all porcelain dental prosthetic restorations. More specifically, the solid, high temperature pin type dowels, when used in dies and models formed of phosphate bonded investment material for making porcelain restorations, when fired to a range between 1600.degree.-2200.degree. F. functions as a heat sink to effect a more uniform heating and cooling of refractory model and porcelain restoration thereon so that the form and shape of the vitrified porcelain restoration may be more accurately maintained.

REFERENCES:
patent: 3153283 (1964-10-01), Weissman
patent: 3521354 (1970-07-01), Stern et al.
patent: 3931677 (1976-01-01), Tinder
patent: 4001938 (1977-01-01), Cooper
patent: 4129281 (1978-12-01), Cooper
patent: 4205443 (1980-06-01), Weissman
patent: 4371339 (1983-02-01), Zeiser
patent: 4585417 (1986-04-01), Sozio et al.
patent: 4591385 (1986-05-01), Pearsall
patent: 4721464 (1988-01-01), Roden et al.

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