Gold is a superior dental alloy utilized for various types of indirect restorations : porcelain fused to gold crowns and bridges, full gold crowns and bridges, dental implant abutments, removable partial dentures or inlays.
The gold alloy is composed of many different types of elements : noble metals : gold, platinum, palladium, silver, and base metals : copper, tin and others. A proper gold alloy should contain at least 60% noble metals.

Gold alloy never corrodes. Some metal alloys, under the influence of saliva, may suffer in time a phenomenon called corrosion. This may lead to the appearance of an unsightly grey coloration in the upper part of the dental crown.
Gold alloy has superior strength and resistance. The main advantage is that gold alloys can be manufactured at a very low thickness and still preserve strength and resistance. The benefit is that less tooth structure needs to be removed.
Gold alloys are lighter than base metal alloys (with the exception of titanium).
Gold alloys are very well tolerated by the body and do not produce any allergic reactions.
Besides gold alloys, other types of noble metal alloys are available. For example, the palladium alloy contains palladium, gold, silver and other base metals.