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    • 8. 发明专利
    • Dental restorative material
    • 牙齿修复材料
    • JP2012246290A
    • 2012-12-13
    • JP2012119462
    • 2012-05-25
    • Kerr Corpケール コーポレーション
    • DRECHSLER ULF
    • A61K6/027A61K6/083
    • A61K6/0835A61K6/0008A61K6/005A61K6/0088A61K6/027A61K6/087C08L63/00
    • PROBLEM TO BE SOLVED: To provide a dental restorative composition including 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.SOLUTION: 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 12:1 to 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.
    • 要解决的问题:提供包含可聚合树脂,基本上半透明的结构填料,平均粒度小于100nm的纳米填料和至少一种流变改性添加剂的牙科修复组合物。 解决方案:在一个实施方案中,结构填料具有与可聚合树脂基本相似的折射率,粗颗粒级分和平均粒度大于0.1μm并小于平均粒子的细颗粒级分 粗颗粒分数的大小。 粗粒子部分与细粒子部分的相对比例为12:1〜2:1(体积),各部分的粒径分布基本上是单峰的,细粒子部分的D(90) 小于或等于粗颗粒分数的D(10)。 版权所有(C)2013,JPO&INPIT