Findings

What do systematic reviews say?

3 questions · 3 findings · 2 reviews · Oral Health

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No studies found 0 · 0%GRADE not reported 1 · 33.3%Very low 2 · 66.7%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Chlorhexidine mouthwash vs placebo

Plaque index (PI) / oral hygiene · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Chlorhexidine mouthwash reduced Plaque Index versus placebo, but certainty is very low.

1 finding from 1 review

The efficacy of mouthwashes on oral microorganisms and gingivitis in patients undergoing orthodontic treatment:… 2023 All outcomes
≤ 3 months
Plaque Index was significantly reduced compared to placebos according to two studies [20; 32].
2 studies
Very low

Chlorhexidine (mouthrinse or gel), as part of oral hygiene care vs placebo or usual care

Plaque index (PI) / oral hygiene · Critically ill patients (adults and children) receiving mechanical ventilation in ICU

1 finding from 1 review

Oral hygiene care for critically ill patients to prevent ventilator‐associated pneumonia 2020 · Cochrane All outcomes
Plaque index: Fu 2019 found a significant reduction in the chlorhexidine group; Ozcaka 2012 and Scannapieco 2009 found no difference; 3 studies; no usable pooled estimate.
3 studies
GRADE not reported

Chlorhexidine mouthwash vs Blank control

Plaque · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

Chlorhexidine mouthwash may reduce the Plaque Index versus blank control in the short term (WMD -0.70, 95% CI -1.12 to -0.27), but the evidence is very uncertain (very low certainty).

1 finding from 1 review

The efficacy of mouthwashes on oral microorganisms and gingivitis in patients undergoing orthodontic treatment:… 2023 All outcomes
<=3 months (short-term) · Orthodontic patients undergoing orthodontic treatment (randomized controlled trials; multiple countries)
WMD -0.70 [-1.12, -0.27]
4 studies · 188 participants
Very low