DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY DR ARMEN TARANYAN / SCIENCE PHOTO LIBRARY
Teeth covered with plaque and tartar. Close-up of a dental patient's lower teeth covered with plaque and tartar. Plaque is a bacterial biofilm that can form on teeth and can cause tooth decay. Tartar is a mineralised and hardened form of dental plaque. If not treated, the condition can lead to gingivitis, peridontitis and tooth loss.
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