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Braun, also part of the Gillette group at that time, started to use the Oral-B brand for electric toothbrushes. Procter & Gamble bought Gillette in 2005 and marketed Oral-B together with Crest under Pro-Health in 2007. [17] [18] A company representative has stated that the "B" in Oral-B stands for "brush". [19]
A brush or carbon brush is an electrical contact, often made from specially prepared carbon, which conducts current between stationary and rotating parts (the latter most commonly being a rotating shaft) of an electrical machine. [1] Typical applications include electric motors, alternators and electric generators. The lifespan of a carbon ...