DENTAL COMPOSITIONS CONTAINING SHORT-CUT FIBERS
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United States of America Patent
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Issued Date -
Jan 24, 2013
app pub date -
Jun 20, 2012
filing date -
Jun 20, 2011
priority date (Note) -
Abandoned
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Abstract
The dental composite includes a resin base and a combination of a short-cut fiber filler and a particulate filler. The short-cut fibers may be made of a glass or a polymer, and may have an average length of about 2 mm to about 6 mm. The particulate filler includes a ground structural filler, which consists of particles having an average particle size of between about 0.05 μm and about 0.5 μm, and a microfiller, which consists of particles having a mean particle size of about 0.04 μm or less. The cured dental composite provides high strength, an improved wear resistance, a dramatically improved fracture resistance and a high gloss retention in simulated extended clinical wear.
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