A crown is a hollow cap-like artificial tooth used to cover a damaged or decayed tooth. The crown restores and strengthens the tooth and protects it from further damage. Crowns can also be used for covering a discoloured or misshapen tooth. A tooth that has been fixed with a crown looks and functions very much like a natural tooth. Crowns have a lifespan for about 10 years or longer if you take good care of them. Crowns can be used to restore both front and back teeth and can be fabricated using different materials. Your dentist will discuss and help you to determine the best type suited to your specific situation.