US 12,296,031 B2
Esthetic dental filling material with high depth of cure
Philipp Bielec, Wasserburg (DE); and Benjamin Gebhardt, Grabs (CH)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Jul. 22, 2022, as Appl. No. 17/814,392.
Claims priority of application No. 21188081 (EP), filed on Jul. 27, 2021.
Prior Publication US 2023/0052305 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 6/893 (2020.01); A61K 6/16 (2020.01); A61K 6/20 (2020.01); A61K 6/30 (2020.01); A61K 6/77 (2020.01)
CPC A61K 6/893 (2020.01) [A61K 6/30 (2020.01); A61K 6/77 (2020.01); A61K 6/16 (2020.01); A61K 6/20 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A dental material that comprises
(a) 5 to 40% by weight of at least one radically polymerizable monomer,
(b) at least one radiopaque filler comprising 1 to 30% by weight ytterbium trifluoride particles having an average particle size of <25 nm, wherein the average particle size is the number-averaged D50 value,
(c) 20 to 90% by weight of at least one inorganic filler,
(d) 5 to 60% by weight of at least one composite filler and
(e) 0.005 to 3.0% by weight of at least one initiator for the radical polymerization,
in each case in relation to the total mass of the dental material
wherein the dental material comprises as monomer (a)
(a-1) at least one urethane (meth)acrylate,
(a-2) at least one radically polymerizable bisphenol A derivative,
(a-3) optionally at least one polycyclic aliphatic dimethacrylate,
(a-4) optionally at least one monomer which does not fall into one of the groups (a-1) to (a-3) and (a-5), and
(a-5) optionally at least one chain regulator.