Tooth sensor reveals patients' lies The sensor would keep a record of how we use our teeth. INVENTORS have created technology they say could be embedded in teeth and used to tell doctors when patients have defied medical advice about eating less or not smoking. The machine learning software is built into a tiny circuit board that can be embedded into tooth cavities or fitted to dentures or a dental brace. According to the New Scientist, the sensor recognises jaw motion patterns in order to tell how much time the patient spends chewing, drinking, speaking, coughing or smoking. The data on mouth motion is then relayed to a smartphone. Staff at the National Taiwan University in Taipei, who developed the software, say the sensors have already proved successful in trials. They say prototype implants installed in dentures had a 94 per cent success rate in guessing jaw motion patterns.