Patent ID: 9724275
Date: 2017-08-08
CPC Classifications: A61K

Claim:
1. A dispersion suitable for use as a precursor for a dental composite, comprising: a filler material and a matrix monomer having at least one polymerizable group, the filler material comprising nanoscale mixed oxide particles that are sterically stabilized by a sol stabilizer, the nanoscale mixed oxide particles including silicon, at least one metal M having an atomic number Z >36 in oxidic form, and at least one covalently bound polymerizable group that is copolymerizable with the at least one polymerizable group of the matrix monomer, wherein the nanoscale mixed oxide particles including the silicon and the metal M have a formula: SiO 2 -MO x and/or SiO 2 -MO x -M′O y , where M′ is a metal having an atomic number Z >36 in oxidic form, wherein the nanoscale mixed oxide particles further comprising at least one further organic group covalently bound thereto.