Process for preparation of dental impressions

US5118290A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hanns P. Muller · Leverkusen, DE
• Peter Schwabe · Leverkusen, DE

Key dates

• Filing date: Jan 30, 1989
• Grant date: Jun 2, 1992
• Expiry date: Jan 30, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for the preparation of a dental impression comprising PA0 A) forming a mixture of a polyaddition product which contains ether, urethane and urea groups, PA0 B) mixing therewith water of proton donor-containing aqueous solution in a weight ratio of A:B of from 1:0.01 to 1:40 and in at least catalytically active amount, the weight ratio of water plus proton donor to the balance of the composition exclusive of the filler ranging from about 0.01:1 to 1:1, and PA0 C) applying the mixture formed in B intraorally to a patient to make a negative copy of the patient's teeth.