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公开(公告)号：US4226622A
公开(公告)日：1980-10-07
申请号：US936560
申请日：1978-08-24
CPC分类号： B22F1/0014 , A61K6/05
摘要： A corrosion-resistant dental alloy is disclosed which has improved handling characteristics during the filling of a dental cavity. The alloy is a substantially uniform blend of two types of particles having the same chemical components, but differing in morphology and, optionally, in proportions of components. One type of particle is spherical or spheroidal in form and the second type of particle is a randomly-shaped microcrystalline form. Handling characteristics of an amalgam prepared from such alloys can be adjusted to suit the requirements of the user by varying the relative proportions of the two types of particles while still retaining the corrosion resistance of the particles.
摘要翻译： 公开了一种耐腐蚀牙科合金，其在牙腔填充期间具有改善的处理特性。 该合金是具有相同化学成分的两种类型的颗粒的基本上均匀的共混物，但在形态和/或可选地以组分的比例不同。 一种类型的颗粒是球形或球形的，第二种类型的颗粒是随机形状的微晶形式。 可以通过改变两种类型的颗粒的相对比例同时保持颗粒的耐腐蚀性来调节由这种合金制备的汞齐的处理特性以适应使用者的要求。
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2.发明授权
公开(公告)号：US4235631A
公开(公告)日：1980-11-25
申请号：US936667
申请日：1978-08-24
CPC分类号： B22F1/0003 , A61K6/05 , C22C1/0466 , Y10S75/955
摘要： A corrosion-resistant dental alloy shows improved handling characteristics during the filling of a dental cavity with an amalgam of the alloy. The alloy particles comprise a mixture of silver, tin and copper particles having a mean particle size of between about 20 and 26.5 microns, and further having a particle size distribution such that substantially all of the particles fall within a particle size range of from about 10 to 52 microns. The particles have a surface area ranging between about 0.22 m.sup.2 /gm and 0.31 m.sup.2 /gm. The alloy, after amalgamation with mercury, retains a corrosion resistance comparable to that of spherical particles having substantially the same composition and having a surface area of about 0.21 m.sup.2 /gm, while retaining handling characteristics comparable to those of flake-like particles also having substantially the same composition and having a surface area of at least about 0.33 m.sup.2 /gm. The copper and silver content of the particles may be higher at their surface than in the interior thereof.
摘要翻译： 耐腐蚀牙科合金在用合金汞齐填充牙腔时表现出改进的处理特性。 合金颗粒包含平均粒径为约20至26.5微米的银，锡和铜颗粒的混合物，并且还具有使得基本上所有的颗粒基本上都落入大约10的粒度范围内的粒度分布 至52微米。 颗粒的表面积在约0.22m 2 / g至0.31m 2 / gm之间。 该合金在与汞合并后保持与具有基本上相同的组成并具有约0.21m 2 / gm的表面积的球形颗粒的耐腐蚀性，同时保持与具有基本相同的片状颗粒的处理特性 相同的组成并且具有至少约0.33m 2 / gm的表面积。 颗粒的铜和银含量在其表面可能比其内部更高。
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