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
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
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
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
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
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
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
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
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
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
One study (Dhyani 2022) reported pain at 1 month: 60 teeth (all vital at enrolment, mechanical NiTi), 0 events (no participant reported pain at 1 month); no meta-analysis
1 study · 60 participants
GRADE not reported
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
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
Root canal medications and canal filling, splinting, extraction of teeth, or surgical removal of any relevant pathology vs Each other, placebo, or no treatment
Outcome not reported · Patients with single and multiple permanent teeth with evidence of any type of external root resorption irrespective of its aetiology,…
The review found no eligible studies for this question.
1 finding from 1 review
None of the studies fulfilled our inclusion criteria and therefore no data analysis was conducted. (Main results: no RCTs that met the inclusion criteria were identified; one ongoing study, NCT00423956, potentially…
0 studies
No studies found
Ultrasonic instrumentation used alone (any ultrasonic device designed specifically for root canal treatment and capable of the active or passive removal of dentine within the root canal) vs Hand instrumentation used alone (files and reamers used manually)
Outcome not reported · People over 18 years of age with single or multiple permanent teeth with a completely formed apex and no evidence of internal resorption,…
The review found no eligible studies for this question.
1 finding from 1 review
Hand instrumentation in conjunction with (as an adjunct to) an ultrasonic device designed specifically for root canal treatment and capable of the active or passive removal of dentine within the root canal vs Hand instrumentation used alone (files and reamers used manually)
Outcome not reported · People over 18 years of age with single or multiple permanent teeth with a completely formed apex and no evidence of internal resorption,…
The review found no eligible studies for this question.
1 finding from 1 review