Pin construction for two-piece model and system

Details Pin construction for two-piece model and system Pin construction for two-piece model and system

2007-10-09

2007-10-09

Rodriguez, Cris (Department: 3732)

Dentistry

Prosthodontics

Preliminary casting, model, or trial denture

C433S074000

Reexamination Certificate

active

10907246

ABSTRACT:
A model and die system includes a working quadrant having an upper flat surface. Pin-receiving tapered bores are formed in the upper flat surface and a thin metallic foil covers the bores. Cast teeth are supported by the working quadrant and each cast tooth has at least one tapered pin depending from it. Each pin includes a tapered main body that matches the taper of the tapered bore, a reduced diameter section of the same taper that accommodates torn or ruptured foil, an annular ramp section that sharply crimps the foil about the entry of the tapered bore, and a tapered rim that matches the taper of the tapered bore to lock the pin into its fully seated position.

REFERENCES:
patent: 4721464 (1988-01-01), Roden et al.
patent: 5201657 (1993-04-01), Koukos

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