There are several different ways of restoring teeth, the most common being a filling. Crowns are used to repair badly decayed, broken or severely discolored teeth or teeth that are not properly aligned. A crown is an artificial covering for the tooth and can be made out of several different types of material. The tooth under the crown is reduced in size, over which the crown will be permanently cemented. Similarly for a bridge the two teeth adjoining the missing space are reduced. Crown & bridges can be made of porcelain, gold or a combination of metal and porcelain or gold and porcelain. Crowns & bridges look just like regular teeth and no one but you and your dentist will know which tooth is yours and which one is artificial