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Do tongue scrapers reduce bad breath?

Yes. “A common reason for bad breath is postnasal drip, which coats the back area of the tongue with bacteria-rich mucus,” says June Lee, D.D.S, a spokeswoman for the Academy of General Dentistry in the U.S. This coating triggers volatile sulphur compounds, which are produced when bacteria and amino acids interact. The compounds stink. A new study in the journal General Dentistry found that using a scraper removed significantly more sulphur compounds than brushing the middle-back tongue with a toothbrush.