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A crown is a tooth-shaped cap that is placed over a tooth to restore its shape and size, strength or improve its appearance. A crown may be needed to protect a weakened tooth from breaking or to hold together parts of a cracked tooth, to restore a broken tooth or a tooth that has been severely worn down, or to replace old, failing restorations. The Cerec crown provides a beautiful looking, single-visit restoration. With its enamel-like material, the Cerec crown looks and feels like your real teeth. Unlike PFM (porcelain fused to metal) crowns Cerec crowns are metal free and can be made in one visit. (Information derived from Cerec promotional material, Sirona Dental Systems)
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