DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY
Tartar (calculus) on teeth. Close-up of the lower teeth of a 30-year-old man, showing tartar build up. Tartar is a form of hardened dental plaque that builds up on and between teeth. It is caused by the precipitation of minerals from saliva and gingival crevicular fluid (GCF) from plaque. For the teeth after cleaning see C036/9113.
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