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2. Wahl Clipper - Wikipedia

   en.wikipedia.org/wiki/Wahl_Clipper

   Wahl Clipper Corporation was founded due to Leo J. Wahl's patent for an electromagnetic hair clipper in 1919. [3] On February 2, 1921, he purchased a majority of the stock of his uncle's manufacturing company which made the clipper, and incorporated the business as Wahl Clipper Corporation. [4] In 1924, Leo Wahl patented a vibrating motor hair ...

3. Electric toothbrush - Wikipedia

   en.wikipedia.org/wiki/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.

4. The best electric toothbrushes of 2025, according to dentists

   www.aol.com/lifestyle/best-electric-toothbrush...

   Cost: $200 | Cleaning: Sonic | Color options: Black, white, gray, pink. If you’ve been noodling over which electric toothbrush to get, you’ve likely seen Oral-B’s brushes get pitted against ...

5. Oral-B - Wikipedia

   en.wikipedia.org/wiki/Oral-B

   2012: Oral-B Trizone 1000 electric toothbrush with brush head shape and brushing technique similar to a manual brush. 2014: the first toothbrush with Bluetooth 4.0 Oral-B SmartSeries technology. 2017: New version of the battery, holds a charge 2 times longer and charges 2 times faster. 2019: Genius X toothbrush with artificial intelligence.

6. Ultrasonic toothbrush - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_toothbrush

   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. It typically operates on a frequency of 1.6 MHz, which translates to 96,000,000 pulses or 192,000,000 movements per minute.

7. Sonicare - Wikipedia

   en.wikipedia.org/wiki/Sonicare

   A second review found no clinical evidence for the dynamic fluid activity of the Sonicare toothbrush being more effective in plaque removal than an Oral-B oscillating/rotating electric toothbrush. [4] A 2007 study comparing the two found the rotation/oscillation brush to be more effective in single-use plaque reduction. [5]