It can be easy to mock the very concept of a “smart toothbrush” — what other device in our lives do we use daily that seems least in need of a connected upgrade? But Oral-B has been upgrading its powered toothbrush lineup with Bluetooth and app-based intelligence for quite a while now, and its latest new smart brush, the iO Series, is actually a very clever and capable update that should help you keep your teeth better-brushed and in healthier shape.
