Dentistry – Prosthodontics – Tooth construction
Patent
1993-02-09
1994-09-13
Mancene, Gene
Dentistry
Prosthodontics
Tooth construction
4332021, A61C 1308
Patent
active
053463960
ABSTRACT:
A wax pattern is built up on the surface of the other end of a post comprising pure titanium. The wax pattern is used to produce a casting mold. While the casting mold is kept at a predetermined temperature, a crystallized glass having a thermal expansion coefficient falling within the range of .+-.5.times.10.sup.-7 with respect to that of pure titanium is melted and cast in the mold. The resultant mold product is heated and crystallized to obtain a dental prosthesis. A post comprising pure titanium is chemically bonded to a core comprising the crystallized glass. This invention provides a dental prosthesis which is easy to manufacture and nontoxic to the human body.
REFERENCES:
patent: 4129944 (1978-12-01), Sung et al.
patent: 4451236 (1984-05-01), Tarasov et al.
patent: 4585417 (1986-04-01), Sozio et al.
patent: 4799887 (1989-01-01), Hakamatsuka et al.
patent: 4828495 (1989-05-01), Bell et al.
patent: 5176747 (1993-01-01), Panzera et al.
English language Abstract of JP 4-231060.
Cherichetti Cindy A.
Mancene Gene
Olympus Optical Co,. Ltd.
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