DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY
Close-up of the mouth of a patient with numerous gold crowns and a missing tooth. Dental crowns are structures placed on or around a tooth or dental implant, replicating the original tooth structure. They are used to restore teeth damaged by injury or tooth decay. Metals, such as gold, can be used for crowns, as well as ceramic materials.
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