Posts Tagged ‘teeth’

by Vanessa Zainzinger

Wireless sensors are ubiquitous, providing a steady stream of information on anything from our physical activity to changes occurring in the world’s oceans. Now, scientists have developed a tiny form of the data-gathering tool, designed for an area that has so far escaped its reach: our teeth.

The 2-millimeter-by-2-millimeter devices (pictured) are made up of a film of polymers that detects chemicals in its environment. Sandwiched between two square-shaped gold rings that act as antennas, the sensor can transmit information on what’s going on—or what’s being chewed on—in our mouth to a digital device, such as a smartphone. The type of compound the inner layer detects—salt, for example, or ethanol—determines the spectrum and intensity of the radiofrequency waves that the sensor transmits. Because the sensor uses the ambient radio-frequency signals that are already around us, it doesn’t need a power supply.

The researchers tested their invention on people drinking alcohol, gargling mouthwash, or eating soup. In each case, the sensor was able to detect what the person was consuming by picking up on nutrients.

The devices could help health care and clinical researchers find links between dietary intake and health and, in the long run, allow each of us to keep track of how what we consume is affecting our bodies.

http://www.sciencemag.org/news/2018/03/tiny-sensor-your-tooth-could-help-keep-you-healthy

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Surgeons in Mumbai have removed 232 teeth from the mouth of an Indian teenager in what they believe may be a world-record operation.

Ashik Gavai, 17, sought medical help for a swelling on the right side of his lower jaw and the case was referred to the city’s JJ hospital, where they found he was suffering from a condition known as complex odontoma, said head of dentistry Sunanda Dhivare-Palwankar.

“We operated on Monday and it took us almost seven hours. We thought it may be a simple surgery but once we opened it there were multiple pearl-like teeth inside the jaw bone,” she said.

After removing those they found a larger “marble-like” structure that they struggled to shift and eventually had to “chisel out” and remove in fragments.

Ashik’s father, Suresh Gavai, said the family had been worried that the swelling was a malignant growth.

“I was worried that it may turn out to be cancer so I brought him to Mumbai,” Gavai told the Mumbai Mirror newspaper.

Dhivare-Palwankar said the literature they had come across on the condition showed a maximum of 37 teeth being removed in such a procedure, whereas she and her team had counted more than 232 taken from Gavai’s mouth.

“I think it could be a world record,” she said.

Gavai’s jawbone structure was maintained during the operation so it should heal without deformities, the surgeon added.

Thanks to Dr. Nakamura for bringing this to the attention of the It’s Interesting community.

http://www.theguardian.com/world/2014/jul/24/indian-boy-has-232-teeth-removed