Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,271 questions · 1,326 findings · 329 reviews

No studies found 247 · 18.6%GRADE not reported 237 · 17.9%Very low 379 · 28.6%Low 285 · 21.5%Moderate 141 · 10.6%High 37 · 2.8%

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

Brief admission to psychiatric hospital by self‐referral plus treatment as usual vs treatment

Violence perpetration · adults meeting 3 or more diagnostic criteria for borderline personality disorder

Brief admission to psychiatric hospital by self‐referral plus… showed no clear difference in violence perpetration: number of participants who perpetrated… compared with treatment (low certainty).

1 finding from 1 review

Brief admission to psychiatric hospital by self‐referral plus treatment as usual vs treatment

Deatha Timing of outcome assessment: 12 months · adults meeting 3 or more diagnostic criteria for borderline personality disorder

Brief admission to psychiatric hospital by self‐referral plus… showed no clear difference in deatha Timing of outcome assessment: 12 months compared with treatment (low certainty).

1 finding from 1 review