Dental composition

US10123948B2 · kind B2 · utility

Assignee

• Dentsply Sirona Inc. · US

Inventors

• Joachim E. Klee · Radolfzell, DE
• Helmut Ritter · Wuppertal, DE
• Sven Pohle · Konstanz, DE
• Oliver Elsner · Radolfzell, DE
• Mareike Bardts · Hilden, DE

Key dates

• Filing date: Jan 29, 2016
• Grant date: Nov 13, 2018
• Expiry date: Jan 29, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F267/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A dental cement hardened by a cement reaction involving the specific polymerizable polyacidic polymer and optionally additional crosslinkable groups, has reduced shrinkage and improved mechanical properties, in particular with regard to flexural strength and fracture toughness. Moreover, the specific polymerizable polyacidic polymer of the present invention contains a high number of acidic groups which is not reduced by the presence of polymerizable moieties, whereby water solubility of the uncured polymer is not impaired by the presence of the polymerizable moieties.