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Evidence found and GRADE certainty

1,183 questions · 1,283 findings · 30 reviews · Oral medicine and oral cancer

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No studies found 164 · 12.8%GRADE not reported 802 · 62.5%Very low 209 · 16.3%Low 71 · 5.5%Moderate 36 · 2.8%High 1 · 0.1%

Tongue scraper or tongue cleaner (One Drop Only tongue cleaner; Tongue-Putzer scraper; polystyrene scraper) vs Toothbrush (used to clean the tongue)

Adverse effects (tongue trauma, nausea) and acceptability · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis
1 finding from 1 review
  • Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
    1 week (Pedrazzi 2004)
    Pedrazzi 2004: six of ten (60%) participants complained of nausea and one participant of tongue trauma, only with the toothbrush; all participants were receptive to the tongue scraper. Seemann 2001: no adverse effects…
    2 studies
    GRADE not reported

Tongue scraper or tongue cleaner (One Drop Only tongue cleaner; Tongue-Putzer scraper; polystyrene scraper) vs Toothbrush (used to clean the tongue)

Self-expressed (perceived) or organoleptic (human nose) assessment of halitosis · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis

The review found no eligible studies for this question.

1 finding from 1 review
  • Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
    Minimum 4 weeks (planned)
    Neither of the two included trials provided any self expressed (perceived) or organoleptic (human nose) assessments of halitosis (the review's primary outcomes); no data.
    0 studies
    No studies found

Tongue scraping (mechanical tongue cleaning) vs Mouthwash or other chemical intervention

Outcome not reported · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis

The review found no eligible studies for this question.

1 finding from 1 review
  • Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
    Minimum 4 weeks (planned)
    No randomized controlled trials comparing mechanical tongue cleaning with mouthwashes were identified; the review notes "the somewhat unexpected lack of randomized controlled trials comparing the effectiveness of…
    0 studies
    No studies found