Metal Porcelain Crowns
A number of different metal alloys and combinations are used to design base metal crowns. Base metal crowns may be designed using silver, palladium, copper, titanium, stainless steel, nickel, chromium, beryllium and cobalt. More often than not, dentists combine different alloys to create the dental crowns. Common combinations include silver and palladium, or cobalt and chromium. Titanium crowns are usually made with a single alloy.
Base metal crowns are quite hard, definitely harder than gold-based crowns. That can make it difficult to insert in the mouth. In certain parts of the mouth, base metal crowns can cause wear on nearby natural teeth. Plus, people with specific metal allergies can’t wear them anyway. For these reasons, dentists rarely make base metal crowns anymore.
Titanium might be an exception. Titanium crowns are not of mixed variety. The metal is highly biocompatible, meaning it can function well with the real teeth in your mouth. The metal is rigid but also ductile. Unlike other metals, titanium can form an oxide layer on the surface of the crown, so it’s less prone to corrosion.