Tooth Sensor Watches Your Mouth

An accelerometer-based oral sensory system embedded in a tooth could identify various oral habits based on dental movement. Larry Greenemeier reports

Join Our Community of Science Lovers!

A person’s mouth says a lot about them. Sounds obvious, but I’m talking less about what vocalizes and more about the way it behaves when we eat, drink, speak or even cough.

Researchers at National Taiwan University believe that monitoring such oral behavior can provide doctors with a wealth of information about a patient’s dietary habits, dental hygiene and overall health.

To test their idea, they built an accelerometer-based oral sensory system to identify how a mouth is being used based on the movement of its teeth. Placed in the mouths of eight people, a prototype system correctly recognized each person’s oral behavior up to 94 percent of the time. [Cheng-Yuan Li et al., Sensor-Embedded Teeth for Oral Activity Recognition]


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


The researchers now want to build a wireless version that might someday fit inside a fake tooth or attach to a pair of braces. The sensor could send you or your doctor a message when you’re not sticking to your diet or not keeping your promise to quit smoking.

Let’s hope they also build in an alarm for bad breath. That would benefit the person wearing the sensor, and everyone around them as well.

—Larry Greenemeier

[The above text is a transcript of this podcast.]

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe