Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,587 questions · 5,761 findings · 495 reviews

No studies found 1,011 · 17.5%GRADE not reported 1,797 · 31.2%Very low 1,100 · 19.1%Low 1,052 · 18.3%Moderate 649 · 11.3%High 152 · 2.6%

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Ultrasound or Doppler guidance vs anatomical landmarks

Other complications (thrombosis, embolism, haematomediastinum and hydromediastinum, haematothorax and hydrothorax, pneumothorax, subcutaneous emphysema, nerve injury) · patients with the need for subclavian vein cannulation for central vein catheterization

It is very uncertain whether ultrasound or Doppler guidance changes other complications (thrombosis, embolism, haematomediastinum and… compared with anatomical landmark (very low certainty).

1 finding from 1 review

Ultrasound or Doppler guidance vs anatomical landmarks

First‐attempt success rate · patients with the need for subclavian vein cannulation for central vein catheterization

Ultrasound or Doppler guidance showed no clear difference in success with attempt number 1 compared with anatomical landmark (high certainty).

1 finding from 1 review

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 h · Adults with acute pain

The intervention probably leads to higher at least 50% of maximum pain relief over 4 to 6 h (moderate certainty).

1 finding from 1 review

Powered toothbrush, side-to-side action vs Manual toothbrush

Plaque · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, side-to-side action showed no clear difference in plaque score (>3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, ionic action vs Manual toothbrush

Plaque · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, ionic action led to lower plaque score (1 to 3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, ionic action vs Manual toothbrush

Gingivitis · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, ionic action showed no clear difference in gingivitis score (1 to 3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, rotation oscillation action vs Manual toothbrush

Plaque · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, rotation oscillation action led to lower plaque score (>3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, counter oscillation action vs Manual toothbrush

Plaque · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, counter oscillation action led to lower plaque score (>3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, circular action vs Manual toothbrush

Plaque · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, circular action showed no clear difference in plaque score (1 to 3 months) compared with manual toothbrush; GRADE not reported.

1 finding from 1 review

Powered toothbrush, side-to-side action vs Manual toothbrush

Gingivitis · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, side-to-side action showed no clear difference in gingivitis score (>3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, ultrasonic action vs Manual toothbrush

Gingivitis · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, ultrasonic action led to lower gingivitis score (1 to 3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review

Powered toothbrush, unknown/other action vs Manual toothbrush

Gingivitis · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)
2 findings from 1 review

Powered toothbrush, counter oscillation action vs Manual toothbrush

Gingivitis · Individuals of any age with no reported disability that might affect toothbrushing (including people wearing orthodontic appliances)

Powered toothbrush, counter oscillation action showed no clear difference in gingivitis score (1 to 3 months) compared with manual toothbrush; GRADE not reported.

2 findings from 1 review