Patent · US Expired

Dental prosthetic from hard, rigid, non-hydrophilic polyurethane elastomer

US4791156A · kind A · utility

16Cited by
6References
6Claims
0Family size

Inventor

Key dates

Filing dateAug 12, 1982
Grant dateDec 13, 1988
Priority date—
Expiry dateAug 12, 2002

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G18/4829
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

There is provided hard, non-toxic, substantially non-hydrophilic dentures including dentures comprising teeth anchored in or bonded to the denture material and optionally a linear of relatively soft elastomer. The hard dentures possess several highly desirable properties such as high heat distortion temperature and excellent impact resistance and rigidity resulting in excellent alignment with oral tissue and retention of superior fit and resistance to distortion under high thermal conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.