MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Dental treatment. Dentist using an electric tool during treatment of a patient. The tool, in his right hand, is connected by a cable to its power source. In his left hand, he has a mirror, being used to pull back the cheek. The dentist is wearing a mask and gloves to prevent cross-contamination of bacteria. Typical dental electric tools include polishing tools and drills. Typical handheld tools are mirrors, tongue depressors and scrapers. The dentist's assistant is using a suction tool (lower right) to remove saliva and debris from the patient's mouth.
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