bn:15056515n
Noun Concept
Categories: Dental equipment, 20th-century inventions, American inventions
EN
ultrasonic toothbrush  Ultrasound toothbrush
EN
An ultrasonic toothbrush is an electric toothbrush designed for daily home use that operates by generating ultrasound in order to aid in removing plaque and rendering plaque bacteria harmless. Wikipedia
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EN
An ultrasonic toothbrush is an electric toothbrush designed for daily home use that operates by generating ultrasound in order to aid in removing plaque and rendering plaque bacteria harmless. Wikipedia
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