| 摘要 |
<p>NOBLE-METAL DENTAL ALLOY WITH IMPROVED GOLD COLOR of-the Disclosure A gold alloy for use in a dental restoration, and which maintains a true yellow-gold color after being cast and having a procelain jacket fired thereon. The alloy is 83-87% gold, 7-12% platinum, 1.5-3.0% rhodium, and less than 1.0% copper. Other elements are included for grain refining, strength, formation of bonding oxide for the ceramic jacket, and the like.</p> |
