Tooth filling material and method of its preparation
    1.
    发明授权
    Tooth filling material and method of its preparation 失效
    牙齿填充材料及其制备方法

    公开(公告)号:US4963184A

    公开(公告)日:1990-10-16

    申请号:US365294

    申请日:1989-06-13

    IPC分类号: A61K6/04

    CPC分类号: A61K6/046

    摘要: A meterial well-suited for gold fillings in tooth cavities consists of a porous sintered compact which is prepared from platelet-shaped gold powder produced by chemical precipitation and which exhibits a pore volume of 80 to 90%.

    摘要翻译: 适用于牙齿中的金填充物的多孔烧结体由通过化学沉淀制备的并且具有80至90%的孔体积的片状金粉制备的多孔烧结体组成。

    Gold-palladium alloys for dental materials
    3.
    发明授权
    Gold-palladium alloys for dental materials 失效
    用于牙科材料的金 - 钯合金

    公开(公告)号:US5695714A

    公开(公告)日:1997-12-09

    申请号:US277623

    申请日:1994-07-20

    IPC分类号: A61C13/08 A61K6/04 C22C5/02

    CPC分类号: C22C5/02 A61K6/046

    摘要: Gold-palladium alloys with a high gold content for dental applications should, for reasons of biocompatibility, not contain any toxically dubious components. For particularly corrosion-resistant and biocompatible Type 4 alloys, tin is needed as the only base-metal component in amounts between 0.7 and 5.8 wt % if one remains within defined limits in a palladium-tin diagram of FIG. 1, for Pt values less than 2%. Such alloys contain, in addition to gold and tin, 6 to 25 wt % palladium, 0 to 12 wt % platinum and 0 to 2 wt % of at least one of iridium, rhodium and/or ruthenium.

    摘要翻译: 由于生物相容性的原因,用于牙科应用的具有高金含量的金 - 钯合金不应含有任何有毒的可疑组分。 对于特别耐腐蚀和生物相容的4型合金,如果在图1的钯 - 锡图中保持在限定的限度内,则需要锡作为0.7-5.8重量%的唯一的贱金属组分。 1,Pt值小于2%。 除了金和锡之外,这种合金还含有6至25重量%的钯,0至12重量%的铂和0至2重量%的铱,铑和/或钌中的至少一种。

    Method of producing flexible plastic bands compounded with hard-material
powders and/or soldering powders
    4.
    发明授权
    Method of producing flexible plastic bands compounded with hard-material powders and/or soldering powders 失效
    制造与硬质材料粉末和/或焊接粉末复合的柔性塑料带的方法

    公开(公告)号:US5547625A

    公开(公告)日:1996-08-20

    申请号:US178565

    申请日:1994-01-07

    摘要: In order to manufacture flexible plastic bands of a thermoplastic synthetic resin containing 40% or more by volume hard materials and/or soldering powder, two grooved and heated shearing rollers arranged parallel to one another and running in opposite directions are used onto which components are applied. The front shearing roller must have a temperature of 25.degree. to 90.degree. C. on the application side and of 30.degree. to 80.degree. C. on the removal side, the rear shearing roller must have a temperature of 30.degree. to 130.degree. C. on the application side and on the removal side of 35.degree. to 100.degree. C., and the temperature of the rear shearing roller must be at least 5.degree. C. above the temperature of the front shearing roller. In addition, the front shearing roller must exhibit a speed of 5 to 25 rpms and the rear roller a speed which is 5 to 70% lower.

    摘要翻译: 为了制造含有40%或更多体积的硬质材料和/或焊粉的热塑性合成树脂的柔性塑料带,使用彼此平行布置并沿相反方向运行的两个带槽和加热的剪切辊,其上应用了哪些部件 。 前剪板辊的使用侧温度必须在25〜90℃,拆卸侧的温度应在30〜80℃,后剪切辊的温度必须在30〜130℃。 在应用侧和拆卸侧的35℃至100℃,后剪切辊的温度必须高于前剪切辊的温度至少5℃。 另外,前面的剪切辊必须具有5到25 rpms的速度,后滚筒的速度要低5到70%。