Dental restorative material

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United States of America Patent

PATENT NO 9237991
SERIAL NO

14474598

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Abstract

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A dental restorative composition is provided that includes a polymerizable resin, a substantially translucent structural filler, a nanofiller having a mean particle size less than 100 nm, and at least one rheology-modifying additive. In one embodiment, the structural filler has a refractive index substantially similar to that of the polymerizable resin, a coarse particle fraction, and a fine particle fraction having a mean particle size greater than 0.1 μm and smaller than the mean particle size of the coarse particle fraction. The relative ratio of the coarse particle fraction to the fine particle fraction is in the range from about 12:1 to about 2:1 by volume, the particle size distribution of each fraction is essentially monomodal, and the D(90) of the fine particle fraction is less than or equal to the D(10) of the coarse particle fraction.

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Patent Owner(s)

Patent OwnerAddress
KERR CORPORATIONORANGE CA 92667

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Drechsler, Ulf Claremont, US 5 15

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