If your dentist notices that a tooth is decayed or seems weakened/cracked a crown may be necessary to make sure that there are no additional problems with the tooth. In cases like this a filling or bonding will not be sufficient.
A crown is used to entirely cover or "cap" a damaged tooth. Besides strengthening a damaged tooth, a crown can be used to improve its appearance, shape or alignment. A crown can also be placed on top of an implant to provide a tooth-like shape and structure for function. Porcelain or ceramic crowns can be matched to the color of your natural teeth.