A redesigned brush head on the Oral-B iO is just one of its improvements. Photo: Proctor & Gamble It’s easy to mock smart toothbrushes, but most people don’t have very good dental hygiene. High-tech ...

Every electric toothbrush will clean your teeth, but some come with extra features and accessories that can bump up the price. To find the models with the best cleaning power, we thoroughly tested the ...