Back casting prefabricated incisal veneers

Details Back casting prefabricated incisal veneers Back casting prefabricated incisal veneers

2005-03-22

2005-03-22

Fiorilla, Christopher A. (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Dental shaping type

C264S019000, C264S020000

Reexamination Certificate

active

06869552

ABSTRACT:
An improved lost wax method for fabricating dental devices, a prefabricated incisal veneer (1) is selected from among a group of said veneers having predetermined shapes, shades, and sizes. Wax is applied (2and3) to the incisal veneer to create a wax buildup onto a model (4) or prefabricated coping (5). Subsequently, a sprue is attached to the applied wax (2and3) and the wax buildup is removed from the model (4) for investing and burnout to create a lost wax mold. For a crown with a substructure, the incisal veneer (1) and the coping (5) are both cast in place with press ceramic, press thermoplastic material, or by injecting a curable resin, composite, or epoxy material into the lost wax mold.

REFERENCES:
patent: 4585417 (1986-04-01), Sozio et al.
patent: 5346397 (1994-09-01), Braiman
patent: 5827063 (1998-10-01), Greenstein
patent: 6183256 (2001-02-01), Fisher
patent: 6250926 (2001-06-01), Foser

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