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A restorative crown protects and restores a broken, weakened or heavily filled tooth. Crowns can also improve the appearance of discoloured or crooked teeth and may be made from metals or ceramics. Treatment usually requires two or more visits and may involve local anaesthetic, tooth preparation, impressions, a temporary restoration, shade matching and bonding the permanent crown into place. Crown options include porcelain fused to ceramic or metal, all-ceramic crowns made using CAD-CAM techniques, and gold crowns. A well-fitted and cared for crown typically lasts 7 to 15 years, depending on dental health and the material used.
