Dr. Kathleen Mullaney • DDS • FAGD

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Could chewing gum help dectect infections in implants?

Could chewing gum help dectect infections in implants?

gumThe newest addition to your dentist’s grab bag of goodies might soon be gum. European scientists describe the development of a chewing gum that detects oral infections Tuesday in Nature Communications. The tech could prove particularly useful for diseases that present with minimal to no symptoms.
“It’s a great screening tool to help people test their health status easily,” Lorenz Meinel, a pharmacist at the University of Würzburg in Germany and senior author of the study, said.
From cavities to gingivitis, oral infections are widespread — 15 to 20 percent of middle-aged adults have gum disease — especially for people with dental implants. Dental implants stabilize crowns, dentures and bridges. While useful for the 30 percent of people over age 65 without teeth, the implants can become infected with bacteria and cause peri-implant disease. Constant prescription of antibiotics could be used for treatment, but Meinel said the tactic is impractical because peri-implant disease develops over a long timeframe (5 to 10 years). So he pivoted to the underlying problem. People do not often sense pain with dental implants, so infected gums go unnoticed. Meinel needed an alternative way to get patients to sense their illness. Luckily, a mouth comes with one of the best detectors on the planet: the tongue.

The tongue is highly sensitive to taste, and a vigilant monitor of your mouth’s chemistry. With this in mind, Meinel and his team designed a disease-sensing gum that capitalized on taste as its readout.
The taste alarm in the gum is a compound called denatonium — the most bitter substance known. As an evolutionary signpost for poisons, people are particularly sensitive to bitterness. The denatonium is diluted in the gum, but is still awfully bitter, Meinel said.
The researchers attached this denatonium to a biological tripwire — a molecule that gets chopped up by enzymes in the saliva of patients with peri-implant disease.
In healthy saliva, the biological sensor and denatonium are tasteless and do not dissolve. But, if peri-implant disease enzymes are present in the saliva, they chew away the sensor and expose the denatonium and bitter flavor.
To test its effectiveness, Meinel and his team mixed their sensor with saliva from people with peri-implant disease or saliva from asymptomatic patients with at least one dental implant. After only five minutes, peri-implant disease saliva released nearly three times more bitter compound than spit from healthy subjects did.
The researchers tested the bitterness of their chewing gum to see how folks might tolerate the taste. Rather than submit patients to a gross tasting excursion, the team measured the bitterness released by their chewing gum with an electronic tongue. This instrument senses sour, salty, umami and bitter flavors with electronic taste buds and measures the intensity of those flavors too. The researchers found the bitterness released by their chewing gum sensor was less than half (40 percent) that of denatonium alone.
Meinel and his team plan to try the gum in real people soon, but in the meantime, they are working on gum-based sensors for other infections, including ones to distinguish strep throat from sore throats caused by the flu.

 

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