Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,310 questions · 1,358 findings · 214 reviews

No studies found 230 · 16.9%GRADE not reported 169 · 12.4%Very low 269 · 19.8%Low 277 · 20.4%Moderate 291 · 21.4%High 122 · 9%

Chlorhexidine varnish (10%) vs placebo or no treatment

Elevated mutans streptococci levels (>=4 with caries screen; high vs low) · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

It is very uncertain whether chlorhexidine varnish (10%) changes elevated mutans streptococci levels (>=4 with caries screen; high vs… compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Chlorhexidine varnish vs placebo or no treatment

Dental caries: dmfs increment (primary teeth) · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…
1 finding from 1 review

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 hours · adults with moderate or severe acute postoperative pain

The intervention leads to higher at least 50% of maximum pain relief over 4 to 6 hours (high certainty).

1 finding from 1 review

Intervention not reported

Participants with at least 1 adverse event · adults with moderate or severe acute postoperative pain

The intervention showed no clear difference in participants with at least 1 adverse event (moderate certainty).

1 finding from 1 review

Intervention not reported

Pain‐free response at 2 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Headache relief at 2 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Headache relief at 1 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Sustained pain‐free during the 24 h post dose · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Sustained headache relief during the 24 h post dose · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

At least one AE · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Serious AE* · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review