The tooth, which is designed to be worn much like an artificial denture, collects data on the movement of the mouth before transmitting it to a computer or smartphone.
The researchers behind the device plan to install a Bluetooth or Wifi transmitter that can send the information wirelessly.
They claim the device could be used to help doctors gather information about the behaviour and eating habits of their patients.
It could help provide information about how often an obese patient is really eating, for example, or help monitor a patient’s breathing.
The tooth, which looks like a normal molar but has an accelerometer embedded inside, could also be used to help people with speech defects or even to help train singers.