Dental Sensors Can Help Track What You Eat

by Rishika Gupta on  March 23, 2018 at 3:08 PM Medical Gadgets
RSS Email Print This Page Comment bookmark
Font : A-A+

Miniature sensors when attached to the teeth can help detect and record a wide range of nutrients, chemicals that we intake finds a new study. The findings of this study are published in the Journal of Advanced Materials.
 Dental Sensors Can Help Track What You Eat
Dental Sensors Can Help Track What You Eat

In research, the scientists have noted that future adaptations of these sensors could enable the detection and recording of a wide range of nutrients, chemicals and physiological states.

Show Full Article


Previous wearable devices for monitoring dietary intake suffered from limitations such as requiring the use of a mouth guard, bulky wiring, or necessitating frequent replacement as the sensors rapidly degraded.

Tufts engineers sought a more adaptable technology and developed a sensor with a mere 2mm x 2mm footprint that can flexibly conform and bond to the irregular surface of a tooth. In a similar fashion to the way a toll is collected on a highway, the sensors transmit their data wirelessly in response to an incoming radiofrequency signal.

The sensors are made up of three sandwiched layers: a central "bioresponsive" layer that absorbs the nutrient or other chemicals to be detected, and outer layers consisting of two square-shaped gold rings. Together, the three layers act like a tiny antenna, collecting and transmitting waves in the radiofrequency spectrum.

As an incoming wave hits the sensor, some of it is canceled out, and the rest transmitted back, just like a patch of blue paint absorbs redder wavelengths and reflects the blue back to our eyes.

The sensor, however, can change its "color." For example, if the central layer takes on salt or ethanol, its electrical properties will shift, causing the sensor to absorb and transmit a different spectrum of radiofrequency waves, with varying intensity. That is how nutrients and other analytes can be detected and measured.

"In theory, we can modify the bio-responsive layer in these sensors to target other chemicals - we are really limited only by our creativity," said Fiorenzo Omenetto, Ph.D., corresponding author and the Frank C. Doble Professor of Engineering at Tufts. "We have extended common RFID [radio frequency ID] technology to a sensor package that can dynamically read and transmit information on its environment, whether it is affixed to a tooth, to the skin, or any other surface."

Source: Eurekalert

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
Notify me when reply is posted
I agree to the terms and conditions

Recommended Reading

News A - Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

News Search

Premium Membership Benefits

Medindia Newsletters

Subscribe to our Free Newsletters!

Terms & Conditions and Privacy Policy.

Stay Connected

  • Available on the Android Market
  • Available on the App Store

News Category

News Archive