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the claim

Using a tongue scraper reduces bad breath.

the verdict
CONTESTED PARTIAL
Recorded sources
5 sources for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that using a tongue scraper reduces bad breath?

Partly. One small clinical study in 13 dental students found morning halitosis values were significantly lower after using a copper tongue scraper than after toothbrushing, and a children's oral-health review recommends tongue scraping for halitosis. However, a reference overview states there are no clear scientific conclusions about tongue cleaners' effect on bad breath, and the remaining items are case reports, protocols, or reviews that do not measure the outcome.

Verdict: CONTESTED PARTIAL · 5 sources for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 5
COATED TONGUE TREATMENT USING TONGUE SCRAPER ALL OVER THE SURFACE OF TONGUE DORSUM
2022
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Sabirin, I. P. R. & Zhafarina, M. (2022). COATED TONGUE TREATMENT USING TONGUE SCRAPER ALL OVER THE SURFACE OF TONGUE DORSUM. doi.org. https://doi.org/10.54052/jhds.sd22.p177-184

Evidence against · 1
Tongue cleaner
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Tongue cleaner. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Tongue_cleaner

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More for · 4
Influence of Copper Tongue Scraper and Toothbrush on Morning Halitosis in Dentistry Students: A Brief Clinical Study.
2026
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CL, d. M. M. N., MC, G., DM, D. S., & SF, d. C. D. (2026). Influence of Copper Tongue Scraper and Toothbrush on Morning Halitosis in Dentistry Students: A Brief Clinical Study.. doi.org. https://doi.org/10.14712/23362936.2026.5

Perspectives on tongue coating: etiology, clinical management, and associated diseases - a narrative review.
2025
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S, A. (2025). Perspectives on tongue coating: etiology, clinical management, and associated diseases - a narrative review.. doi.org. https://doi.org/10.1007/s44445-025-00048-5

Importance of a Healthy Tongue: Could It Be a Reflection of Overall Health in Children?
2025
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BRC, G., SJ, K., & KV, G. (2025). Importance of a Healthy Tongue: Could It Be a Reflection of Overall Health in Children?. doi.org. https://doi.org/10.7759/cureus.85574

Comparative study of photodynamic therapy with LED and probiotics in the treatment of halitosis: protocol for a randomised controlled clinical trial.
2025
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ARH, M., JMAS, G., CDPV, R., MLL, G., APT, S., LJ, M., ACRT, H., RA, M., VS, R., RA, P., CCG, D., KPS, F., & SK, B. (2025). Comparative study of photodynamic therapy with LED and probiotics in the treatment of halitosis: protocol for a randomised controlled clinical trial.. doi.org. https://doi.org/10.1136/bmjopen-2024-095544

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