Sonicare

[2] However a 2004 review of 29 studies concluded that only electric toothbrushes with rotational/oscillation movement removed more plaque than other brushes when correctly used.

[5] An additional study showed that while both Sonicare and Oral B electric toothbrushes do better than manual toothbrushes in removing plaque, reducing gingival inflammation, and reducing probing depths, the Sonicare showed significantly more improvement than Oral B.

[7][8] In 1987, David Giuliani, an entrepreneur with a background in electrical engineering, met with University of Washington professors Drs.

They formed a new company named GEMTech to promote a dental hygiene device using a piezoelectric multimorph transducer.

A few months later Optiva Corporation changed its name to Philips Oral Healthcare, Inc. By the end of 2001, Sonicare had become the number-one selling rechargeable power toothbrush in the United States.