![]() Unlike the Pro 1000, with the 4100 you can choose from two vibration intensities (strong or stronger), which may be helpful when first getting used to this model’s powerful motor. Like the Pro 1000, the 4100 has a pressure sensor, lacks superfluous cleaning modes, and has earned the ADA Seal. The 4100, which has a two-minute timer with quadrant pacing, also has twice the battery life of the Oral-B brush, lasting two weeks on a single charge instead of one week (in our tests it lasted for an average 16 days of use), so it might be a better choice for travelers who don’t want to pack yet another charger. The Philips Sonicare 4100 is quieter than the Oral-B Pro 1000, relying on a vibrating motion that’s more subtle than the oscillating motion of our top pick Oral-B brush (though the vibrations can feel slightly more uncomfortable when the back of the brush knocks against your other teeth). Some people find this feature incredibly useful. Pressure sensors that buzz, beep, or light up can let someone know when to let up while brushing.
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