Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

920 questions · 964 findings · 153 reviews

No studies found 215 · 22.3%GRADE not reported 85 · 8.8%Very low 241 · 25%Low 260 · 27%Moderate 135 · 14%High 28 · 2.9%

Single-visit root canal treatment vs Multiple-visit root canal treatment (two or more visits)

Postoperative pain intensity in the immediate postobturation period (up to 72 hours), continuous (VAS) · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

Single-visit root canal treatment showed no clear difference in postoperative pain intensity in the immediate postobturation period… compared with multiple-visit root canal treatment (two or more visits) (low certainty).

1 finding from 1 review

Systemic antibiotic prophylaxis (any regimen; topical therapy excluded) administered before and/or after tooth extraction vs placebo

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People undergoing tooth extraction (21 of 23 trials: healthy patients undergoing impacted third molar extraction; 1 routine intra-alveolar…

It is very uncertain whether systemic antibiotic prophylaxis (any regimen; topical therapy… changes pain (continuous, VAS 0-10 cm, 7th day) compared with placebo (very low certainty).

1 finding from 1 review

n3PUFAs vs placebo

Depressive symptomology (continuous) HDRS where possible; higher scores indicate greater symptomology · adults with Major Depressive Disorder
1 finding from 1 review

Intervention not reported

Duration of continuous positive airway pressure therapy (hours or days) · preterm infants less than 30 weeks' gestational age requiring conventional mechanical ventilation for respiratory distress syndrome

The review found no eligible studies for this question.

1 finding from 1 review