Researchers have unveiled an innovative vaccination method using dental floss to tap into the gums’ permeability. This groundbreaking approach, which could lead to needle-free vaccines, was detailed in Nature Biomedical Engineering. The idea emerged when Harvinder Gill discovered that the gingival sulcus, the area between the teeth and gums, is highly absorbent.
To test this theory, the team conducted an experiment on mice. They coated dental floss with inactive flu viruses and treated a group of mice every two weeks across three sessions. When exposed to the live flu virus, all vaccinated mice survived, showcasing a strong immune response, evidenced by increased antibodies and T cells in their lungs and spleens. In contrast, unvaccinated mice did not survive.
Exploring its potential in humans, the team conducted a feasibility study with 27 participants using dental floss picks coated with food dye. The test showed that, on average, participants delivered 60% of the dye to their gums. Notably, most volunteers expressed willingness to receive vaccines via floss rather than traditional injections.
This promising research suggests a future where vaccines could be administered through everyday dental hygiene practices, though clinical trials are essential to confirm its efficacy in humans.
