They are tooth-shaped caps that restore the strength of severely decayed or broken teeth in children.
Usually, there is:
A. Stainless Steel Crown
Most common choice for baby teeth. Durable, less expensive.
Drawback - Does not match tooth color.
B. Tooth Coloured Ceramic
Matches tooth color.
C. Resin Veneered Crown
Less durable, matches tooth color.
D. Polycarbonate Crown
Less expensive, temporary tooth restoration.
E. Zirconia Crowns
Most durable, matches tooth shade.