What materials are crowns made of?
Mainly ceramic, with different types depending on the tooth and its use, or ceramic on a metal base. The choice takes into account appearance, strength and your situation.
Crowns, bridges and dentures
All-ceramic crowns are widely used today. Some ceramics favour translucency and appearance, which makes them ideal for front teeth. Others, which are stronger, suit back teeth that bear heavy pressure.
Porcelain-fused-to-metal crowns combine a metal framework covered with ceramic. They remain a proven solution in certain situations, but the metal base can sometimes show as a thin grey line at the edge of the gum.
The choice depends on the position of the tooth, the space available, the colour of the underlying tooth, your habits such as clenching, and your cosmetic expectations.
All crowns are made by a dental laboratory from an impression. The dentist explains the material recommended in your case and states this choice on the written estimate.
This is a general answer. Only a consultation at the practice can tell what suits your situation.