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To choose the best electric toothbrushes, manual toothbrushes, travel toothbrushes and kid-friendly options, we tested more than 15 brushes from brands like Colgate, Philips Sonicare, GUM, Oral-B ...
A typical electric toothbrush. An electric toothbrush, motorized toothbrush, or battery-powered toothbrush is a toothbrush that makes rapid automatic bristle motions, either back-and-forth oscillation or rotation-oscillation (where the brush head alternates clockwise and counterclockwise rotation), in order to clean teeth. Motions at sonic ...
A few months later Optiva Corporation changed its name to Philips Oral Healthcare, Inc. By the end of 2001, Sonicare had become the number-one selling rechargeable power toothbrush in the United States. [11] In 2003, to improve Philips brand recognition in the US, Philips rebranded the Sonicare toothbrush as "Philips Sonicare".
Any electric toothbrush is technically a powered toothbrush. If the motion of the toothbrush is sufficiently rapid to produce a hum in the audible frequency range (20 Hz to 20,000 Hz), it can be classified as a sonic toothbrush. Any electric toothbrush with movement faster than this limit can be classified as an ultrasonic toothbrush.
Jim Carrey has his reasons for coming out of retirement to make Sonic the Hedgehog 3. "I came back to this universe because, first of all, I get to play a genius, which is a bit of a stretch. And ...
Continuing the tradition set by the previous two films, Sonic the Hedgehog 3 (in theaters Dec. 20) will also set the stage for a potential fourth movie to introduce another video game character ...
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