Tooth dentine, SEM

Tooth dentine, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Tooth dentine. Coloured scanning electron micrograph (SEM) of a vertical fracture through the tooth of a domestic cat (Felis catus). The bulk of a tooth is formed of dentine (green), a mineralised tissue with a similar composition to bone. Within the dentine are channels called dental tubules (brown), containing odontoblasts, cells which produce new dentine. The visible part of a tooth (the crown) consists of enamel- covered dentine. Exposed dentine is sensitive to heat, cold and touch because it contains nerve endings.

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Keywords: anatomical, anatomy, animal, biological, biology, brown, channel, channels, close-up, coloured, dental, dentine, domestic cat, false-colour, false-coloured, felis catus, fracture, fractured, green, nature, scanning electron micrograph, scanning electron microscope, sem, structure, tooth, tubule, tubules, zoological, zoology

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