Two can play the smartphone-savvy toothbrush game, it seems. Procter & Gamble tells Reuters that it's releasing an Oral-B toothbrush (pictured above) that, like its Kolibree rival, will talk to your smartphone via Bluetooth to show how well you're cleaning your teeth. Dentists will play a more important role here, however -- they can program the companion app to make sure you're cleaning spots you tend to miss. Ideally, this will prevent the tendency to slack off following a check-up. The smart brush will be one of the priciest models in the Oral-B line at £199 ($331) when it ships in June, but it may be worth the expense if it spares you from any cavities.