MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Dental drilling. Drill being used in a patient's mouth. The cheek is being pulled back by the tool at top. The drill consists of a rotating bit (white). This is used to drill away decayed parts of a tooth, allowing a filling or a cap to be implanted.`The tooth being drilled here is one of the molars.
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