Bad breath

Does a Tongue Scraper Work? What the Reviews Say

Published 2026-10-31 · Educational guide

Quick answer: Systematic reviews show that mechanical tongue cleaning can reduce breath odor and tongue coating, more so when added to toothbrushing. But the effect tends to be short-lived, and the evidence for chronic halitosis is limited.

What the reviews found

A 2010 systematic review found that tongue brushing or scraping can reduce breath odor and tongue coating, but noted that data on chronic halitosis were insufficient.

A 2013 meta-analysis found that toothbrushing plus tongue cleaning reduced volatile sulfur compounds and tongue coating more than toothbrushing alone, though it found insufficient evidence on the best frequency, duration, or method.

Tongue scraping can reduce odor and tongue coating
Benefits tend to be short-lived
Long-term evidence is still limited

A 2019 trial in gingivitis patients

A randomized trial in gingivitis patients found that a tongue scraper, added to oral hygiene instructions after professional cleaning, improved volatile sulfur levels and tongue coating scores compared with instructions alone.

How to use a tongue scraper

Start at the back of the tongue and pull forward with light pressure. Rinse the scraper after each pass. Stop if you feel pain or bleeding, and see a dentist if the tongue stays sore.

Frequently asked questions

How often should I scrape my tongue?

The reviews don’t set an exact frequency. Many people scrape once a day, usually in the morning or before bed.

Is a metal or plastic scraper better?

Research hasn’t shown one material to be clearly better. Choose one that is comfortable and easy to clean.

Sources

This article is for education only and doesn’t replace care from a licensed professional. Before buying any product or changing a treatment, consult your dentist or physician.