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What do systematic reviews say?

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Evidence found and GRADE certainty

585 questions · 606 findings · 220 reviews

No studies found 606 · 100%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Intervention not reported

At least 30% reduction in pain · adults with neuropathic pain (3 studies in painful diabetic neuropathy and postherpetic neuralgia)

The review found no eligible studies for this question.

1 finding from 1 review

Ozone applied to the carious lesion (10 or 40 seconds), with a fluoride reductant and oral hygiene/preventive advice vs No ozone, with a fluoride reductant and oral hygiene/preventive advice (as in the intervention group)

Pain (assessed by the patient) · People of any age with caries (including demineralisation in non-cavitated carious lesions); the caries may affect any single tooth…

The review found no eligible studies for this question.

1 finding from 1 review

TENS vs no TENS

Additional analgesia required (escape analgesia) · women who have given birth vaginally, requiring analgesia for after‐birth pains.

The review found no eligible studies for this question.

1 finding from 1 review

Hydromorphone vs fentanyl

Relief of pain · people with moderate to severe cancer pain

The review found no eligible studies for this question.

1 finding from 1 review

Hydromorphone vs oxycodone

Relief of pain · people with moderate to severe cancer pain

The review found no eligible studies for this question.

1 finding from 1 review

Audiovisual distraction vs Conventional treatment

Successful LA/painless treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Electrical counter-stimulation device (DentalVibe) vs Conventional treatment (no stimulation)

Successful LA/painless treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Counter-stimulation and distraction (combined) vs Conventional treatment

Successful LA/painless treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Counter-stimulation or distraction vs Conventional treatment

Successful LA/painless treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review