申请人:Kuraray Noritake Dental Inc.
公开号:EP3108868A1
公开(公告)日:2016-12-28
Provided is a dental restorative composition that has good handling properties when in the form of a paste having yet to be cured and that has light diffusion ability and transparency when in the form of a cured product. The dental restorative composition includes a polymerizable monomer, a polymerization initiator, an inorganic filler (C) having an average particle diameter of 0.1 to 1 µm, an organic-inorganic composite filler (D) having an average particle diameter of 1 µm or more and less than 10 µm, and an organic-inorganic composite filler (E) having an average particle diameter of 10 to 50 µm. An absolute value of a difference between a refractive index (Cd) of the inorganic filler (C) and a refractive index (Ad) of a polymer of the polymerizable monomer is 0.01 or less, an absolute value of a difference between the refractive index (Ad) and one of a refractive index (Dd) of the organic-inorganic composite filler (D) and a refractive index (Ed) of the organic-inorganic composite filler (E) is 0.01 or less, and an absolute value of a difference between the refractive index (Ad) and the other of the refractive index (Dd) and the refractive index (Ed) is 0.03 or more.
本发明提供了一种牙科修复组合物,该组合物在以尚未固化的糊状形式存在时具有良好的操作性能,在以固化产品形式存在时具有光扩散能力和透明度。牙科修复组合物包括可聚合单体、聚合引发剂、平均颗粒直径为 0.1 至 1 微米的无机填料 (C)、平均颗粒直径为 1 微米或以上且小于 10 微米的有机-无机复合填料 (D) 以及平均颗粒直径为 10 至 50 微米的有机-无机复合填料 (E)。无机填料(C)的折射率(Cd)与可聚合单体的聚合物的折射率(Ad)之差的绝对值为 0.01 或以下,折射率(Ad)与有机-无机复合填料(D)的折射率(Dd)和有机-无机复合填料(E)的折射率(Ed)之一之差的绝对值为 0.01或更小,且折射率(Ad)与折射率(Dd)和折射率(Ed)中的另一个之差的绝对值为0.03或更大。