Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,192 questions · 1,243 findings · 151 reviews

No studies found 252 · 20.3%GRADE not reported 180 · 14.5%Very low 291 · 23.4%Low 282 · 22.7%Moderate 174 · 14%High 64 · 5.1%

Summary of findings: Single vs combination intravenous anti‐pseudomonal antibiotic therapy

Time to next course of antibiotics  · adults and children with cystic fibrosis

The review found no eligible studies for this question.

2 findings from 1 review

Summary of findings: Single vs combination intravenous anti‐pseudomonal antibiotic therapy

Adverse events during treatment · adults and children with cystic fibrosis

The review found no eligible studies for this question.

2 findings from 1 review

Summary of findings: Single vs combination intravenous anti‐pseudomonal antibiotic therapy

Change in sputum P aeruginosa density at end of treatment (cfu/g) · adults and children with cystic fibrosis

Summary of findings: single showed no clear difference in change in sputum P aeruginosa density at end of treatment (cfu/g) compared with combination intravenous anti‐pseudomonal antibiotic therapy (moderate certainty).

2 findings from 1 review

Summary of findings: Single vs combination intravenous anti‐pseudomonal antibiotic therapy

Need for extra treatment · adults and children with cystic fibrosis

The review found no eligible studies for this question.

2 findings from 1 review

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

Post-treatment pain within 1 week (from first session) · 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 probably leads to higher post-treatment pain within 1 week (from first session) compared with multiple-visit root canal treatment (two or more visits) (moderate certainty).

1 finding from 1 review

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

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · 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 in the immediate postobturation period (up to 72… compared with multiple-visit root canal treatment (two or more visits) (low certainty).

1 finding from 1 review

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

Tooth extraction due to endodontic problems · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes tooth extraction due to endodontic problems compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

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

Swelling or flare-up · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes swelling or flare-up compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

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

Analgesic (painkiller) use · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes analgesic (painkiller) use compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

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

Pain at two weeks (postobturation) · 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 pain at two weeks (postobturation) compared with multiple-visit root canal treatment (two or more visits); GRADE not reported.

1 finding from 1 review

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

Pain at 12 months or more (long-term postobturation pain) · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption
1 finding from 1 review

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

Sinus or fistula formation at last · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes sinus tract or fistula formation compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

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

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

Pain at 1 month · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption
1 finding from 1 review

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

Postobturation pain at 1 week · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes postobturation pain at 1 week compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

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

Radiological failure (periapical radiolucency) after at least 1 year · 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 radiological failure (periapical radiolucency) after at least 1 year compared with multiple-visit root canal treatment (two or more visits) (moderate certainty).

1 finding from 1 review

Combined paracetamol plus ibuprofen in a single tablet (e.g. paracetamol 1000 mg/ibuprofen 400 mg or 500/200 mg) vs Single drugs given separately (paracetamol 1000 mg or ibuprofen 400 mg)

Proportion of patients with >50% maximum pain relief (TOTPAR) over 2 hours · Patients with pain after surgical removal of lower wisdom teeth (third molars) requiring bone removal or with baseline moderate to severe…

Combined paracetamol plus ibuprofen in a single tablet (e.g.… showed no clear difference in proportion of patients with >50% maximum pain relief (TOTPAR) over 2… compared with single drugs given separately (paracetamol 1000 mg or ibuprofen 400… (moderate certainty).

1 finding from 1 review