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A crown is best used when the tooth structure is very weak and cannot sustain a regular filling. A dental crown is a tooth shaped restoration, which rebuilds the tooth to optimal shape, size and function. This process is very similar to inlay/onlays as crowns are made in a lab and sent back to the provider for them to be cemented. The only difference is that crowns are full coverage meaning that they cover the tooth from the outside completely. This feature also requires two appointments: one for preparation of the tooth for crown and the second for cementation.
Crowns are also used for restoring implants after they are placed surgically as well as after most root canaled treated teeth.
