Method of manufacturing metallic tooth parts

Dentistry – Method or material for testing – treating – restoring – or... – Crown

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A61C 510

Patent

active

050731130

ABSTRACT:
In the process for producing metal partial denture prostheses according to the invention, a mold is made from the jaw or tooth to be treated by means of an electrically non-conducting material, then the inner wall of that mold is provided with an electrically conducting layer. Thereafter the inner space of the mold and of the electrically conducting layer is filled with a filler material into which is introduced at least one rod after which the positive pattern produced by the electrically conducting layer and the filler material then separated from the mold. The filler material is an electrically non-conducting plastic whose volume enlarges when heated. The positive pattern is introduced in a heated electrolyte in which one or more layers of high-melting point metals or noble metals are galvanically deposited on the electrically conducting layer on the positive pattern. The positive pattern with the galvanically deposited layer is then removed from the electrolyte and, after cooling to approximately room temperature, the galvanic layer of high-melting metal or noble metal that forms the partial denture prosthesis is separated from the positive pattern without damaging it.

REFERENCES:
patent: 397320 (1889-02-01), Ward
patent: 1612605 (1926-12-01), Buenaventura
patent: 3552018 (1971-01-01), Zahn
patent: 3636632 (1972-01-01), Costa et al.
patent: 4363627 (1982-12-01), Windeler
patent: 4562882 (1986-01-01), Alleluia
patent: 4776795 (1988-10-01), Hornig
patent: 4820387 (1989-04-01), Yamashita et al.

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