You awaken in the middle of the night: that tooth that’s been a little sensitive lately is throbbing. By morning, you realize you have a real problem. So you head into the bathroom, plug your smart toothbrush into your smartphone—and when you put the brush in your mouth, it scans your teeth. The images automatically upload to the Cloud. They are analyzed by artificial intelligence, which finds a cavity in your aching tooth and a hairline crack in another molar. The scans and preliminary analysis are transmitted to your dentist, who then texts you to schedule an appointment...
