Dentistry – Prosthodontics – Impression taking or bite determination
Patent
1987-08-06
1988-08-02
Bleutge, John C.
Dentistry
Prosthodontics
Impression taking or bite determination
522 28, 522 29, 522 65, 522 90, 522 79, 522 95, 522 83, 522 23, 523109, 524871, A61C 900, C08F 250, C08F 2036
Patent
active
047611367
ABSTRACT:
A dental impression material which comprises a pre-polymer formed by reacting a polyol or combination polyester polyol with a diisocyanate, and then with a hydroxyacrylate or hydroxymethacrylate; along with a metal catalyst, plasticizer, photosensitizer, reducing agent, filler and other additives. The essential characteristics of the polymer portion that makes the system work are that it is a long-chain aliphatic polyester-polyurethane molecule, which when endcapped with hydroxy arcylate moieties, is photo-polymerizable to yield a tear-resistant, highly flexible, medium-durometer elastomer, suitable for use as a dental impression material.
REFERENCES:
patent: 2532502 (1950-12-01), Joy
patent: 4089763 (1978-05-01), Dart et al.
patent: 4182829 (1980-01-01), Walkowiak et al.
patent: 4459193 (1984-07-01), Radcliffe et al.
patent: 4468202 (1984-08-01), Cohen
patent: 4551486 (1985-11-01), Tateosian
patent: 4553936 (1985-11-01), Wang
Groh Carole L.
Madhavan Narayanan
Probst Robert L.
Bleutge John C.
Dean Jr. R.
Kerr Manufacturing Company
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