Metal free, porcelain crowns are both functional and esthetic in appearance. Porcelain crowns cover the entire surface of the tooth, when teeth have been badly damaged and can no longer function without breaking down or being at risk of fracture. Because they’re matched to the color of your teeth, they can be placed in an area of your mouth without compromising the way your smile looks. Crowns are typically used on top of teeth that have been treated with a root canal, experienced large fractures or decay, or have a very large restoration that needs to be removed.