by 
The Curious Bag
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The Sonicare toothbrush, a type of electric toothbrush, has bristles that vibrate at high speed. Sonic toothbrushes first appeared on the market in 1983, according to Animated-Teeth.com.
Speed
Sonicare toothbrushes can create more than 40,000 brush strokes per minute. Regular electric toothbrushes create up to 7,500 strokes per minute.
Scrubbing Action
Sonicare toothbrushes, like manual and other electric toothbrushes, clean mostly by scrubbing the tooth surface.
Secondary Cleaning
Sonicare toothbrushes also clean by agitating fluids around the teeth at speeds high enough to loosen and remove dental plaque, even if the brush doesn't contact it. Other electric toothbrushes generally do not remove plaque this way.
Stain Removal
Sonicare brushes can remove 80 percent of coffee, tea and tobacco stains, according to Dr. Dan Peterson, a dentist at Dentalgentlecare.com.
Bleached Teeth
According to Dentalgentlecare.com, Sonicare toothbrushes also keep teeth whiter than manually brushing.
Source:
Animated-teeth.com: Sonic Toothbrush
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