An electric toothbrush can make caring for your teeth easier and more effective. With a manual toothbrush, you do the up-and-down labor of every brushstroke, while an electric toothbrush simply requires you to guide it gently across the surface of your teeth and may make it easier to brush hard-to-reach areas.
There are two major types of electric toothbrushes: Sonic and oscillating/rotating. A sonic toothbrush moves the brush head back and forth, while an oscillating toothbrush rotates it in a circular pattern.
You'll also have a choice between a rechargeable toothbrush and a battery-operated toothbrush. A rechargeable toothbrush sits in a cradle connected to an outlet, which keeps it charged. These models tend to be longer lasting than battery-operated toothbrushes, which often have dedicated brush heads. However, a battery-operated toothbrush may be a better choice for travel, especially if you'll be outside North America, since it won't require you to convert voltage.
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