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    • 91. 发明授权
    • Method of making dental restorations and product thereof
    • 制造牙齿修复及其产品的方法
    • US3834024A
    • 1974-09-10
    • US27349872
    • 1972-07-20
    • STAR DENTAL LABOR
    • KOCHAVI J
    • A61C13/00A61K6/04
    • A61K6/0205A61C13/0003A61K6/046
    • A restoration is made using an alloy of approximately 80 percent Ni - 20 percent Cr employing conventional casting techniques heretofore used with precious metals. After the casting has been cleaned it is heated under vacuum commencing at 1,400*- 1,500*F. and increasing gradually to approximately 1,950*F. The vacuum is released and the casting cooled -- a grayish blue colored compound forming on the surface. Porosities and casting defects may be conveniently repaired using ceramic gold paste. The metal may be soldered, to other metal members, whether of the same alloy or gold or any other conventional metal. Porcelain is then applied, again using conventional techniques. The product is characterized by the very good bond of porcelain to metal, extreme dimensional accuracy and relatively low cost of metal.
    • 使用迄今用于贵金属的常规铸造技术,使用约80%Ni-20%Cr的合金进行修复。 铸造完成后,在真空度1400〜1500°F下加热,逐渐升温至约1,950°F。真空释放,冷却,表面形成灰蓝色的化合物。 可以使用陶瓷金膏方便地修复孔隙和铸造缺陷。 金属可以被焊接到其他金属构件,不管是相同的合金还是金,还是任何其他常规的金属。 然后再次使用常规技术施加瓷器。 该产品的特点是瓷器与金属的结合非常好,尺寸精度极高,金属成本相对较低。