Apparatus for obtaining improved dental castings

Details Apparatus for obtaining improved dental castings Apparatus for obtaining improved dental castings

1985-04-01

1986-08-05

Godici, Nicholas P.

Metal founding

Means to shape a forming surface

Pattern

164 35, 164244, 164376, 164377, B22C 702, B22C 904, B22C 2100

Patent

active

046037284

ABSTRACT:
The apparatus comprises an expandable investment ring having a removable base. Formed on the top surface of the base, and within the void defined by the ring, is an indexed sprue former. A curved runner bar having an indexed coping is formed at one end thereof in mating relation to the sprue former. The curved full arch runner bar comprises a proximal end portion and distal end portion with the distal end forming a first and second curved configuration portion which together approximates the curved configuration of the jawbone of a patient. The first and second curved configuration portions are interconnected thereby resulting in extremely accurate full arch base metal castings. The apparatus is also useful for preparing precious metal castings.

REFERENCES:
patent: 4396054 (1983-08-01), Cole
patent: 4508155 (1985-04-01), Rousseau
Preci-Roto Brochure by Preat Corp., San Mateo, Calif., 1981, 164-35.

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