The Bestselling Toothbrushes on Amazon
I Won't Buy a Toothbrush If It's Not a Bestseller — Here Are My Top Amazon Finds
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No, it's not a tech brush, but the Oral-B Indicator Contour Clean Toothbrush ($5 for four) signals when it's time for a replacement thanks to the fading blue bristles. Its bristles were designed to get to hard-to-reach grooves between teeth while being gentle on gums.