专利名称：METHOD OF MAKING DENTAL
RESTORATIONS AND PRODUCT THEREOF
发明人：KOCHAVI J,US申请号：US27349872申请日：19720720公开号：US3834024A公开日：19740910
摘要：A restoration is made using an alloy of approximately 80 percent Ni - 20 percentCr employing conventional casting techniques heretofore used with precious metals.After the casting has been cleaned it is heated under vacuum commencing at 1,400 DEG -1,500 DEG F. and increasing gradually to approximately 1,950 DEG F. The vacuum isreleased and the casting cooled -- a grayish blue colored compound forming on thesurface. Porosities and casting defects may be conveniently repaired using ceramic goldpaste. The metal may be soldered, to other metal members, whether of the same alloyor gold or any other conventional metal. Porcelain is then applied, again usingconventional techniques. The product is characterized by the very good bond ofporcelain to metal, extreme dimensional accuracy and relatively low cost of metal.
申请人：STAR DENTAL LABOR,US
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