Your teeth age over time along with the rest of your body. Normal chewing habits can break your teeth down slowly over time, as well as issues such as trauma, fillings, and tooth decay. When a tooth is weakening and is in danger of deteriorating further or fracturing, a gold dental crown can be used to protect the tooth. These gold crowns can also be used to protect a tooth that has undergone a root canal or has a previous worn down or defective crown. Gold crowns are known for their longevity, lasting for decades, while porcelain crowns are known to fail far more frequently. Cast gold crowns have become less popular due to their appearance in recent years, but cannot be beat for their long-term protection of your teeth and for providing the least amount of wear to the opposing teeth, whereas porcelain crowns, while more attractive, can badly abrade and wear the teeth the teeth they touch on the opposing jaw.