Patent · US Active

Dental composite compositions for reduced shrinkage stress

US9931280B2 · kind B2 · utility

1Cited by

5References

20Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Hui LU · Dover, US
Xiaoming Jin · Shanghai, CN
Joachim E. Klee · Radolfzell, DE
Bernard Koltisko · Emmaus, US

Key dates

Filing date	Oct 3, 2014
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Oct 25, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D295/24
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A dental composite composition is disclosed that includes a polymerizable resin, filler particles, and at least one polymerizable stable radical. A variety of polymerizable stable radicals may be employed, including those that have a 2,2,6,6-tetramethylpiperidinyl-1-oxyl moiety. Compositions as described herein exhibit excellent mechanical strength, hardness, and flexural modulus, while also significantly decreasing shrinkage stress caused by polymerization.

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