What are crowns, and would I need one?
Crowns (also known as caps) are used to cover and protect teeth that have been weakened by decay around fillings or that are very damaged, decayed, chipped, discolored or misaligned. Crowns are usually required after a root canal or when a tooth cracks or breaks. Crowns are made of either gold, porcelain with a metal base, or all porcelain. Crowns are necessary when there is not enough tooth left to support a filling. They can be used for cosmetic purposes to whiten dark teeth or to straighten crooked teeth.