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The Sonicare story
Source: wikipedia ( click here to go to the source)

Featured firm in this article: Optiva Corporation of Snoqualmie, WA

Sonicare is the brand name of an electric toothbrush produced by Philips.

In 1987, David Giuliani, an entrepreneur with a background in electrical engineering, met with University of Washington professors Drs. David Engel and Roy Martin. They formed a new company named GEMTech to promote a dental hygiene device using a piezoelectric multimorph transducer. After several years of research and creating prototypes, the Sonicare toothbrush was introduced in November 1992 at a periodontal convention in Florida.

In 1995, GEMTech changed its name to Optiva Corporation. In October 2000, Philips Domestic Appliances and Personal Care, a division of Philips, acquired Optiva Corporation. 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.[7] In 2003, to improve Philips brand recognition in the US, Philips began rebranding the Sonicare toothbrush as "Philips Sonicare".

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Penick, Catherine (2004). "Power toothbrushes: a critical review". Int J Dent Hyg 2 (1): 40--4. doi:10.1111/j.1601-5037.2004.00048.x. PMID 16451451.
Warren, PR; Cugini, MA; Chater, BV; Strate, J (December 2004). "A review of the clinical efficacy of the Oral-B oscillating/rotating power toothbrush and the Philips Sonicare toothbrush in normal subject populations". Int Dent J 54 (6): 429--37. doi:10.1111/j.1875-595X.2004.tb00300.x. PMID 15633499.
Biesbrock, AR; Bartizek, RD; Walters, PA; Warren, PR; Cugini, M; Goyal, CR; Qaqish, J (2007). "Clinical evaluations of plaque removal efficacy: an advanced rotating-oscillating power toothbrush versus a sonic toothbrush". J Clin Dent 18 (4): 106--11. PMID 18277740.
Pelka, Anna-Kristina; Nagler, Tonia; Hopp, Imke; Petschelt, Anselm; Pelka, Matthias Anton (August 2011). "Professional brushing study comparing the effectiveness of sonic brush heads with manual toothbrushes: a single blinded, randomized clinical trial". Clin Oral Investig 15 (4): 451--60. doi:10.1007/s00784-010-0411-0. PMID 20387085.
Moritis, K; Jenkins, W; Hefti, A; Schmitt, P; McGrady, M (2008). "A randomized, parallel design study to evaluate the effects of a Sonicare and a manual toothbrush on plaque and gingivitis". J Clin Dent 19 (2): 64--8. PMID 18763689.
"Sonicare - Our Story". Retrieved 2008-06-04.