50.4 MB (2.9 MB compressed)
5138 x 3429 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
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Tooth decay (dental caries). Tooth decay (dental caries) in an adult male patient who is a smoker. Caries is the decay and crumbling of teeth caused by bacteria in plaque, a substance that covers the surface of unclean teeth. Nicotine in cigarette smoke stains the teeth.
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