CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Dental implant. Close-up of the mouth of a patient showing the position of an implant (crown, third tooth from the right on the upper jaw). This is a false tooth, used when the original tooth has died and been removed. The tooth-like crown is supported on a metal peg (not seen), which is screwed into position on a post that has been embedded in a hole in the jawbone.
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