Prosthetic denture prepared from polyurethane elastomer

Details Prosthetic denture prepared from polyurethane elastomer Prosthetic denture prepared from polyurethane elastomer

1979-02-21

1980-09-30

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

433199, 433201, 433202, 433212, 528 66, 528 77, 106 35, C08G 1832, A61C 1300

Patent

active

042256968

ABSTRACT:
A hard, substantially non-hydrophilic polyurethane elastomer denture is disclosed in which the elastomer possesses a hardness of not less than about Shore D60 and preferably not greater than about Shore D100. The polyurethane elastomer is prepared from a polyether polyol and an aromatic polyisocyanate in which the isocyanate groups are bonded directly to the aromatic nucleus. The aforesaid hard non-hydrophilic polyurethane elastomer can constitute the entire material of which the denture is made, including the teeth if so desired, or it can be employed as the tooth-holding portion of the denture in combination with a soft, substantially non-hydrophilic elastomer as the mouth-engaging portion of the denture. The hard non-hydrophilic polyurethane elastomer possesses superior resistance to thermal distortion under the conditions prevailing in the mouth.

REFERENCES:
patent: 4024636 (1977-05-01), Colpitts et al.
patent: 4024637 (1977-05-01), Colpitts et al.
patent: 4080412 (1978-03-01), Colpitts et al.
patent: 4110184 (1978-08-01), Dart et al.

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