Duplication of lost dentures

Plastic article or earthenware shaping or treating: apparatus – Means forming a mold; or flask – per se – Including means to separate subsequently molded product from...

Reexamination Certificate

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C425S178000, C425SDIG044, C433S167000, C433S171000

Reexamination Certificate

active

07040885

ABSTRACT:
A mold used in duplicating a denture consists of a tissue side mold section and an exterior side mold section. The tissue side mold section is made of a dimensionally stable material, such as dental stone or an addition-cured silicone rubber, so that the tissue side of the denture can be accurately reproduced at a later time. The exterior side mold is made of a resilient material, so that the original denture and its duplicate can be removed from the mold. The mold sections are housed in a two part flask that was initially used to fabricate the mold sections. The mold is fabricated by the steps of forming an impression of the original denture, and of fabricating a replacement denture using this mold.

REFERENCES:
patent: 4195047 (1980-03-01), Drennan et al.
patent: 4521193 (1985-06-01), Cialone
patent: 5151279 (1992-09-01), Kimura
patent: 5324186 (1994-06-01), Bakanowski
patent: 5599491 (1997-02-01), Pollock et al.
patent: 6224375 (2001-05-01), Diasti et al.

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