Barium-free, X-ray-opaque dental glass and dental glass/polymer composite, and the use thereof
    1.
    发明授权
    Barium-free, X-ray-opaque dental glass and dental glass/polymer composite, and the use thereof 有权
    无钡,X射线不透明牙科玻璃和牙科玻璃/聚合物复合材料及其用途

    公开(公告)号:US06297181B1

    公开(公告)日:2001-10-02

    申请号:US09427590

    申请日:1999-10-27

    IPC分类号: C03C3062

    摘要: The invention relates to a barium-free, X-ray-opaque dental glass, to a dental glass/polymer composite comprising the glass, and to the use thereof as dental filling, where the dental glass has the following composition (in % by weight): SiO2 20-45, Al2O3 5-35, B2O3 1-10, Na2O 1-10, K2O 0-8, Cs2O 0-8, sum all alkali metal oxides 1-15, CaO 0-8, SrO 0-27, ZnO 2-20, ZrO2 2-10, P2O5 0-10, La2O3 0-10, F 2-20, the total content of B2O3, ZnO, ZrO2 and La2O3 is >20% by weight, and the refractive index nd of the dental glass is in the range from 1.47 to 1.70.

    摘要翻译: 本发明涉及一种不含钡的X射线不透明牙科玻璃,涉及包含玻璃的牙科玻璃/聚合物复合材料及其作为牙科填充物的用途,其中牙科玻璃具有以下组成(重量% ):SiO 2 20-45,Al 2 O 3 5-35,B 2 O 3 1-10,Na 2 O 1-10,K 2 O 8,Cs 2 O 8,总和碱金属氧化物1-15,CaO 0-8,SrO 0-27 ,ZnO 2-20,ZrO 2 2-10,P 2 O 5 0-10,La 2 O 3 0-10,F 2-20,B 2 O 3,ZnO,ZrO 2和La 2 O 3的总含量为> 20重量%,折射率nd为 牙科玻璃的范围为1.47至1.70。