Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1988-07-01
1989-10-31
Swisher, Nancy A. B.
Dentistry
Method or material for testing, treating, restoring, or...
Crown
4332221, 106 35, A61C 508
Patent
active
048774022
ABSTRACT:
The disclosure relates to an artificial tooth crown composed of glass ceramics comprising crystallized calcium phosphate forming essentially apatite which is a main inorganic component of natural bones or teeth. The disclosure also relates to a method of producing the artificial tooth crown. The artificial tooth crown has superior dimensional accuracy since it is made by precision casting. The tooth crown can be securely adhered by a dental cement such as glass ionomer. Furthermore, the physical properties of the tooth crown are very similar to those of the natural teeth, and the wear caused by the biting motion between the tooth crown and its mating tooth does not differ from that caused by the biting motion between the natural teeth. Furthermore, the method does not differ from the conventional precision casting method.
REFERENCES:
patent: 2480048 (1949-08-01), Rice
patent: 2724166 (1955-11-01), Myerson
patent: 3649608 (1972-03-01), Logemann
patent: 3787900 (1974-01-01), McGee
patent: 3913229 (1975-10-01), Driskill et al.
patent: 3922155 (1975-11-01), Broemer et al.
patent: 3981736 (1976-09-01), Broemer et al.
patent: 4028325 (1977-06-01), King et al.
patent: 4097935 (1978-07-01), Jarcho
patent: 4113500 (1978-09-01), Ebihara et al.
patent: 4131597 (1978-12-01), Bluethgen et al.
patent: 4149893 (1979-04-01), Aoki et al.
patent: 4308064 (1981-12-01), Takami et al.
patent: 4321042 (1982-03-01), Scheicher
patent: 4439959 (1984-02-01), Faunce
patent: 4451235 (1984-05-01), Okuda et al.
patent: 4475892 (1984-10-01), Faunce
patent: 4481036 (1984-11-01), Panzera
patent: 4503157 (1985-03-01), Hatahira
patent: 4547327 (1985-10-01), Bruins et al.
patent: 4562882 (1986-01-01), Alleluia
Hirabayashi Masaya
Noda Iwao
Kyocera Corporation
Swisher Nancy A. B.
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