Crowns, often referred to as caps, are made of white porcelain and fit over your teeth like a hat. Crowns sit over the entire part of the tooth that lies above the gum line. Crowns are made to protect heavily filled or root canaled teeth by making them stronger and less susceptible to fractures or future damage. Crowns give you a stronger and healthier smile while maintaining a natural look. Crowns can also be used cosmetically to improve the look of your smile by changing the shape or color.