A crown can return structure, strength and function to a tooth that has undergone extensive decay or damage. Designed to fit smoothly and to function as a healthy tooth, a crown will protect the tooth from further damage and preserve the natural alignment of the jaw.
Many recent breakthroughs in adhesive materials, combined with the development of stronger porcelain materials, allowed dentists to make crowns entirely out of porcelain. These all-porcelain crowns maintain transparency that makes it difficult to tell them from the natural tooth. Without metal, there is no more problem of a dark line at the edge of the gums.
Besides esthetic component, metal-free crowns are best choice for people with allergies to nickel and other metals. Also, porcelain crowns can be placed at the edge of the tooth above the gumline and that is much healthier for both tooth and gums.
Today, a variety of metal-free crowns are available. Most are based on porcelain (ceramic) with different supplements to improve properties of crown material. All ceramic crowns are biocompatible, strong and come with a warranty that can last up to five years.
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