If it weren’t for David Giuliani’s bout with periodontal disease in the 1980s, we might still be stuck with only one way to scrub our pearly whites. Instead that buildup of plaque inspired Giuliani, an electrical engineer, to fashion a superior tool for oral hygiene used by millions of Americans today.
In 1992—along with UW researchers David Engel, Joseph Miller, and Roy Martin—he debuted Sonicare, an electric toothbrush with bristle tips that could move 100 times faster than a manual version. Giuliani had a better way to clean beneath his gumline—and a new calling.
The entrepreneur served as the CEO of Optiva, which produced and marketed Sonicare
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