Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,038 questions · 2,118 findings · 339 reviews

No studies found 323 · 15.3%GRADE not reported 166 · 7.8%Very low 552 · 26.1%Low 592 · 28%Moderate 340 · 16.1%High 145 · 6.8%

Intraoral vertical ramus osteotomy (IVRO) vs Sagittal split ramus osteotomy (SSRO)

Stability of correction: vertical changes of B-point (1 week to 1 year) · Adults (16 years of age or older) with an Angle Class III malocclusion (prominent lower front teeth); people with syndromes, clefts or…

Intraoral vertical ramus osteotomy (IVRO) showed no clear difference in stability of correction: vertical changes of B-point (1 week to 1… compared with sagittal split ramus osteotomy (SSRO); GRADE not reported.

1 finding from 1 review

Oral paracetamol vs placebo

At least 50% reduction in pain · Patients requiring surgical removal of a lower wisdom tooth or teeth, with baseline moderate to severe pain (surgery under local…

Paracetamol (single oral dose, any dose or formulation; subgroups up… led to higher achieving at least 50% pain relief at 4 hours (using pain intensity… compared with placebo; GRADE not reported.

3 findings from 1 review

Oral paracetamol vs placebo

Patients with one or more adverse events · Patients requiring surgical removal of a lower wisdom tooth or teeth, with baseline moderate to severe pain (surgery under local…

Paracetamol (single oral dose, any dose or formulation; subgroups up… showed no clear difference in patients with one or more adverse events compared with placebo; GRADE not reported.

1 finding from 1 review

Oral paracetamol vs placebo

Participant‐reported pain relief of 50% or greater · Patients requiring surgical removal of a lower wisdom tooth or teeth, with baseline moderate to severe pain (surgery under local…

Paracetamol (single oral dose, any dose or formulation; subgroups up… led to higher achieving at least 50% pain relief at 6 hours (using pain relief… compared with placebo; GRADE not reported.

1 finding from 1 review

Thermoelastic copper NiTi (CuNiTi) arch wire vs Conventional (stabilised) NiTi arch wire

Time to next/working arch wire · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

Thermoelastic copper NiTi (CuNiTi) arch wire showed no clear difference in time to next/working arch wire compared with conventional NiTi arch wire; GRADE not reported.

1 finding from 1 review

Single-strand superelastic NiTi arch wire vs Coaxial superelastic NiTi arch wire

Alignment rate · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

Single-strand superelastic NiTi arch wire probably leads to lower alignment rate compared with coaxial superelastic NiTi arch wire (moderate certainty).

1 finding from 1 review

Superelastic NiTi arch wire vs Thermoelastic NiTi arch wire

Root resorption · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

It is very uncertain whether superelastic NiTi arch wire changes root resorption (reduction in root length) compared with thermoelastic NiTi arch wire (very low certainty).

1 finding from 1 review

Superelastic NiTi arch wire vs Thermoelastic NiTi arch wire

Time to next/working arch wire · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

Superelastic NiTi arch wire showed no clear difference in time to next/working arch wire compared with thermoelastic NiTi arch wire; GRADE not reported.

1 finding from 1 review

NiTi arch wire of one cross-sectional size vs NiTi arch wire of a different cross-sectional size

Pain · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)
1 finding from 1 review
  • Different sizes of NiTi wires (Alhaija 2021; Erdinc 2004); not pooled due to clinical heterogeneity; little or no difference at day 1. Erdinc 0.014 vs 0.016 inch higher pain at day 4 MD 5.00 (0.19 to 9.81) and day 6 MD…
    2 studies · 149 participants
    Low

Thermoelastic copper NiTi (CuNiTi) arch wire vs Conventional (stabilised) NiTi arch wire

Alignment rate · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

It is very uncertain whether thermoelastic copper NiTi (CuNiTi) arch wire changes alignment rate compared with conventional NiTi arch wire (very low certainty).

1 finding from 1 review

Superelastic NiTi arch wire vs Conventional (stabilised) NiTi arch wire

Pain day 1 · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

Superelastic NiTi arch wire showed no clear difference in pain day 1 compared with conventional (stabilised) NiTi arch wire (low certainty).

1 finding from 1 review