Even smart toothbrushes have AI now
 

Before the likes of Oral-B started selling Bluetooth-enabled, app-connected toothbrushes, there was Kolibree. The startup developed one of the first "smart" toothbrushes that incentivized regular brushing and documented oral hygiene habits. We caught...

https://www.engadget.com/2017/01/03/...ai-toothbrush/