Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,760 questions · 8,065 findings · 1,036 reviews

No studies found 1,686 · 20.9%GRADE not reported 675 · 8.4%Very low 1,953 · 24.2%Low 2,048 · 25.4%Moderate 1,296 · 16.1%High 407 · 5%

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Intervention not reported

QoL (physical component) at up to 28 days, measured on the PROMIS Global‐10 scale and normalized to values from 16.2, low QoL, to 67.2, maximum QoL · all trials contributing results to the summary of findings table included people with mild disease (WHO scale 1 to 3)§

The intervention showed no clear difference in qoL (physical component) at up to 28 days, measured on the PROMIS… (high certainty).

1 finding from 1 review

Intervention not reported

QoL (mental component) at up to 28 days, measured on the PROMIS Global‐10 scale and normalized to values from 21.2, low QoL, to 67.6, maximum QoL · all trials contributing results to the summary of findings table included people with mild disease (WHO scale 1 to 3)§

The intervention showed no clear difference in qoL (mental component) at up to 28 days, measured on the PROMIS… (high certainty).

1 finding from 1 review

Steroids vs lubricants

Change in patient‐reported symptom scores (lower is favored) · people with dry eye

Steroids showed no clear difference in change in patient‐reported symptom scores (lower is favored) compared with lubricants (moderate certainty).

1 finding from 1 review

Steroids vs cyclosporine A

Change in fluorescein corneal staining scores (lower is favored) · people with dry eye

Steroids showed no clear difference in change in fluorescein corneal staining scores (lower is favored) compared with cyclosporine A (low certainty).

1 finding from 1 review

Steroids vs cyclosporine A

Change in tear osmolarity (mOsm/kg) (lower is favored) · people with dry eye

It is very uncertain whether steroids changes change in tear osmolarity (mOsm/kg) (lower is favored) compared with cyclosporine A (very low certainty).

1 finding from 1 review

Steroids vs lubricants

Change in fluorescein corneal staining scores (lower is favored) · people with dry eye

Steroids showed no clear difference in change in fluorescein corneal staining scores (lower is favored) compared with lubricants (moderate certainty).

1 finding from 1 review

Steroids vs lubricants

Change in tear osmolarity (mOsm/kg) (lower is favored) · people with dry eye

It is very uncertain whether steroids changes change in tear osmolarity (mOsm/kg) (lower is favored) compared with lubricants (very low certainty).

1 finding from 1 review

Steroids vs cyclosporine A

Change in patient‐reported symptom scores (lower is favored) · people with dry eye

Steroids showed no clear difference in change in patient‐reported symptom scores (lower is favored) compared with cyclosporine A (low certainty).

1 finding from 1 review

CBT vs inactive control (usual care care, attention control, waitlist)

Mental distress · People aged 12 years and over with painful TMD lasting 3 months or longer

Cognitive behavioural therapy (CBT) showed no clear difference in psychological distress at follow-up compared with usual care, waiting list or no treatment (control) (low certainty).

1 finding from 1 review

CBT vs alternative treatment

Reduction in pain intensity · People aged 12 years and over with painful TMD lasting 3 months or longer

Cognitive behavioural therapy (CBT) may leads to lower pain intensity at follow-up (6-12 months) compared with alternative (active) treatment (e.g. oral splint, medication,… (low certainty).

1 finding from 1 review

CBT vs inactive control (usual care care, attention control, waitlist)

Disability caused by pain at follow-up · People aged 12 years and over with painful TMD lasting 3 months or longer

Cognitive behavioural therapy (CBT) showed no clear difference in pain disability at follow-up compared with usual care, waiting list or no treatment (control) (low certainty).

1 finding from 1 review

Lacebacks with fixed appliances vs Fixed appliances

Size of the lower jaw (arch length) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Lacebacks with fixed appliances showed no clear difference in size of the lower jaw (arch length) compared with fixed appliances only (control); GRADE not reported.

1 finding from 1 review

Schwarz appliance vs No active treatment (control)

Size of the lower jaw (arch length, change) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance showed no clear difference in size of the lower jaw (mandibular arch length, change) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review

Cervical pull headgear vs Minor interceptive procedures (control)

Amount of crowding (lower incisor crowding) at 10 weeks · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

It is very uncertain whether cervical pull headgear changes amount of crowding (lower incisor crowding) at 2 years compared with minor interceptive procedures (control) (very low certainty).

1 finding from 1 review

Intensive periodontal treatment (subgingival SRP with or without other periodontal treatment) vs Supra-gingival scaling

Endothelial function (flow-mediated dilation) · Adults (any age/sex) with chronic periodontitis (>=5 teeth remaining; PPD >4 mm), with or without hypertension

Intensive periodontal treatment (subgingival SRP with or without… led to higher endothelial function (flow-mediated dilation) compared with supra-gingival scaling; GRADE not reported.

3 findings from 1 review

Schwarz appliance vs No active treatment (control)

Amount of crowding (change in mandibular crowding) at 8 weeks · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

It is very uncertain whether schwarz appliance changes amount of crowding (lower arch crowding, change) at 9 months compared with no active treatment (control) (very low certainty).

1 finding from 1 review

Self-ligating brackets vs Conventional brackets

Lower incisor inclination (lingual tipping and retrusion) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Self-ligating brackets showed no clear difference in lower incisors to mandible (inclination, degrees) compared with conventional brackets; GRADE not reported.

1 finding from 1 review