Built into a tiny circuit board that fits in a tooth cavity, the sensor has an accelerometer that sends data on mouth motion to a smartphone.
Machine learning software is taught to recognise each telltale jaw motion pattern, then works out how much of the time the patient is chewing, drinking, speaking, coughing or smoking.
The inventors -
The device can be fitted into dentures or a dental brace, and the team is planning to miniaturise the device to fit in a cavity or crown.
The researchers said that the sensor have shown great promise: in tests on eight people with a prototype implant installed in their dentures, the system recognised oral activities correctly 94 per cent of the time.
The prototype was attached to a power source by an external wire, so the team still needs a way to include a microbattery.
Once they manage this, the researchers want to add a Bluetooth radio to the device. But as that is a microwave energy source - albeit a very low power one - Chu says medical experts are advising the team on how to ensure the implant would be safe. (ANI)
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