Patent ID: 7601767

Claim:
Composite material having a total filler content of 60.5 to 95% by weight, containing A) 0.5 to 10% by weight of non-agglomerated nanofillers having particle sizes of 1 to 50 nm; B) at least 60% by weight of a further filler mixture of 50 to 90% coarse-particle and 10 to 50% fine-particle dental glass, having a size ratio, relative to the average particle size (d 50 value), of coarse to fine particles of >1:4 to 1:30; C) 5-39.5% by weight of a monomer component, comprising a mixture of i. 60 to 80% by weight bis-GMA (bisphenol A glycidyl methacrylate) or TCD-di-HEMA ((bis(methacryloyloxymethyl)tricyclo[5.2.10 2,6 ]-decane) or TCD-di-HEA (bis(acryloyloxymethyl)-tricyclo[5.2.1.0 2,6 ]decane), ii. 10 to 18% by weight UDMA (urethane dimethacrylate), iii. Residual TEDMA (triethylene glycol dimethacrylate) and/or multifunctional crosslinkers; D) up to 1% by weight initiator(s).