Tooth decay, SEM

Tooth decay, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Tooth decay. Coloured scanning electron micrograph (SEM) of dental plaque (brown) on a human incisor. Plaque is a film of bacteria embedded in a glycoprotein matrix. The matrix is formed from bacterial secretions and saliva. The bacteria feed on sugars in food, producing acid as a waste product. This acid corrodes the teeth's enamel coating, resulting in cavities.

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Keywords: canine, coloured, condition, crown, decaying, dental, dentistry, disorder, enamel, false-coloured, human, human body, medical, medicine, odontology, one, oral, plaque, root, scanning electron micrograph, scanning electron microscope, sem, single, teeth, tooth

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