Prosthetic denture prepared from polyurethane elastomer

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

1979-11-23

1981-08-04

Anderson, Harold D.

Dentistry

Prosthodontics

Tooth construction

433199, 433201, 433202, 528 66, 528 76, 106 35, A61C 1300

Patent

active

042819920

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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