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the claim
Using a tongue scraper reduces bad breath.
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CONTESTED PARTIAL
Recorded sources
5 sources for · 1 against
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
Evidence for · 5
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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
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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
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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
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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
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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
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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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