Crowns are fitted to teeth were there has been so much damage/decay that there is not enough tooth tissue left to place a filling. A crown is a laboratory constructed shell that completely covers and protects the tooth above the gum line. They are made of metal, porcelain, or porcelain with metal inside
for strength. Crowns are very durable, lasting 10 years or more. They can look and feel exactly like a natural tooth and can also improve the appearance of misshapen and discolored teeth. The broken down tooth is first shaped so that, with the crown on, it will be the same size as the normal tooth. A moldable material is pressed around the tooth, to make an exact 'impression' and then sent to the laboratory. A temporary crown is made to fit the tooth until a second appointment when the permanent crown is cemented on.