A dental crown is a “cap” which is placed over a tooth that has been broken, treated by root canal, stained, damaged by decay, or is misshapen. Individually crafted and custom-fitted dental crowns blend in with the tone and contour of your natural teeth and can last for more than 15 years. Sometimes crowns are also used to hold a dental bridge or top off a dental implant or they may be applied for certain cosmetic modifications or aesthetic purposes.