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Losing your wisdom teeth can help you improve Sense of Taste – says study

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A new study suggests patients with their wisdom teeth extracted had improved their sense of taste decades after undergoing surgery.

The findings of the study call into question the notion that the extraction of wisdom teeth, known as the third molar, has only the potential to adversely affect taste and is one of the first studies to analyze the long-term effects of extraction on taste.

According to Dr Richard L. Doty – senior author of the study and director of the Smell and Taste Center at the University of Pennsylvania:

Prior studies have only pointed to adverse effects on taste after extraction and it has been generally believed that those effects dissipate over time

This new study shows us that taste function can actually slightly improve between the time patients have surgery and up to 20 years later. It’s a surprising but fascinating finding that deserves further investigation to better understand why it’s enhanced and what it may mean clinically

added Doty.

Doty with co-author Dane Kim, a third-year student in the University of Pennsylvania School of Dental Medicine, examined data from 1,255 patients who had undergone a chemosensory evaluation at Penn’s Smell and Taste Center over the course of 20 years.

Among that group, 891 patients had received third molar extractions and 364 had not.

The “whole-mouth identification” test incorporates five different concentrations of sucrose, sodium chloride, citric acid, and caffeine. Each solution is sipped, swished in the mouth, and then spit out.

Subjects then indicate whether the solution tastes sweet, salty, sour, or bitter.

The extraction group outperformed the control group for each of the four tastes, and in all cases, women outperformed men.

The study suggests, for the first time, that people who have received extractions in the distant past experience, on average, an enhancement (typically a three to 10 percent improvement) in their ability to taste.

The study strongly suggests that extraction of the third molar has a positive long-term, albeit subtle, effect on the function of the lingual taste pathways of some people

Kim said.

Two possibilities, the authors said, could explain the enhancement.

First, extraction damage to the nerves that innervate the taste buds on the front of the mouth can release inhibition on nerves that supply the taste buds at the rear of the mouth, increasing whole-mouth sensitivity.

Second, hypersensitivity after peripheral nerve injury from a surgery like an extraction has been well documented in other contexts.

There is evidence, for example, from animal studies that repetitive light touch, which might occur during chewing, gradually accentuates neural responses from irritated tissue that can lead to progressive long-term tactile hypersensitivity. Whether this occurs for taste, however, is not known.

Further studies are needed to determine the mechanism or mechanisms behind the extraction-related improvement in taste function

Doty said.

The effects are subtle but may provide insight into how long-term improvement in neural function can result from altering the environment in which nerves propagate

Doty concluded.

The results of the study from Penn Medicine were published in the journal ‘Chemical Senses’.

Photo by Michael Ansell/Walt Disney Television via Getty Images

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