US Patent Issued to Ivoclar Vivadent on Aug. 4 for "Photopolymerizable dental composites with rapid curing and low shrinkage stress" (Liechtensteiner, Swiss Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,350, issued on Aug. 4, was assigned to Ivoclar Vivadent AG (Schaan, Liechtenstein).

"Photopolymerizable dental composites with rapid curing and low shrinkage stress" was invented by Benjamin Gebhardt (Grabs, Switzerland) and Norbert Moszner (Triesen, Liechtenstein).

According to the abstract* released by the U.S. Patent & Trademark Office: "Radically polymerizable material, which contains (a) 0.01 to 5 wt.-% of at least one transfer reagent, (b) 5 to 60 wt.-% of at least one multifunctional (meth)acrylate or a mixture of mono- and multifunctional (meth)acrylates, (c) 0.01 to 3.0 wt.-% of a mixture of at least one monomolecular and at least one bimolecular photoinitiator, (d) 30 to...