The manufacturers of Triumph with SmartGuide hope that their new gizmo will be this year's Christmas must-have in the bathroom product.
The device comes with a wireless LCD display that can be stuck on to the shaving mirror as the brush whirrs away. It uses tiny microchips and sensors to feed back information to an inbuilt "brain", which can detect when too much or too little pressure is being applied.
The LCD display shows a circle divided into four, which represents four different sectors of the mouth. As each quadrant is cleaned, the screen guides where to clean and for how long.
The display counts 30 seconds for each quadrant and two minutes overall. It also alerts the user to when the brushes have become worn, and acts as a clock when not in use.
According to dental experts at Oral B, people using the device are four times more likely to spend two minutes per clean than if using a manual brush.
"We are dedicated to helping improve the way people care for their teeth and gums and taking a lot of the guesswork out of brushing," the Daily Mail quoted the firm's dental expert Dr Surinder Hundle as saying.
"Triumph with SmartGuide does just that, guiding the user in real time to help improve his or her brushing habits," he added.
The Triumph, which goes on sale in Britain from next month, will cost a whopping 140 pounds per device.
A big advertisement campaign will be launched to promote the product in the running up to Christmas to promote is as a gift.