Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,908 questions · 3,101 findings · 509 reviews

No studies found 571 · 18.4%GRADE not reported 358 · 11.5%Very low 723 · 23.3%Low 854 · 27.5%Moderate 489 · 15.8%High 106 · 3.4%

Diode laser, visible red (630 nm to 700 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through tactile stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, visible red (630 nm to 700 nm) led to lower changes in intensity of pain (VAS 0 to 10) tested through tactile… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

3 findings from 1 review

Diode laser, near infrared (700 nm to 850 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through air blast stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, near infrared (700 nm to 850 nm) led to lower changes in intensity of pain (VAS 0 to 10) tested through air blast… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

3 findings from 1 review

Diode laser, near infrared (850 nm to 980 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through air blast stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, near infrared (850 nm to 980 nm) led to lower changes in intensity of pain (VAS 0 to 10) tested through air blast… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

2 findings from 1 review

Diode laser, near infrared (850 nm to 980 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through tactile stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, near infrared (850 nm to 980 nm) led to lower changes in intensity of pain (VAS 0 to 10) tested through tactile… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

2 findings from 1 review

In-office laser therapy (all types combined) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through tactile stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

It is very uncertain whether in-office laser therapy (all types combined) changes changes in intensity of pain (VAS 0 to 10) tested through tactile… compared with placebo (placebo laser or placebo agent) or no treatment (very low certainty).

3 findings from 1 review

Nd:YAG laser vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through tactile stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Nd:YAG laser (neodymium-doped:yttrium-aluminum-garnet) showed no clear difference in changes in intensity of pain (VAS 0 to 10) tested through tactile… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

2 findings from 1 review

Diode laser, near infrared (700 nm to 850 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through tactile stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, near infrared (700 nm to 850 nm) showed no clear difference in changes in intensity of pain (VAS 0 to 10) tested through tactile… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

2 findings from 1 review

Diode laser, visible red (630 nm to 700 nm) vs Placebo (placebo laser or placebo agent) or no treatment

Changes in intensity of pain (VAS 0 to 10) tested through air blast stimuli · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

Diode laser, visible red (630 nm to 700 nm) led to lower changes in intensity of pain (VAS 0 to 10) tested through air blast… compared with placebo (placebo laser or placebo agent) or no treatment; GRADE not reported.

3 findings from 1 review

Probiotics vs placebo

Hypertensive disorders of pregnancy: pre‐eclampsia · preventing gestational diabetes

Probiotics leads to higher hypertensive disorders of pregnancy (pre‐eclampsia) compared with placebo (high certainty).

1 finding from 1 review

Intervention not reported

Duration of neonatal intensive care unit stay (hours or days) · preterm infants less than 30 weeks' gestational age requiring conventional mechanical ventilation for respiratory distress syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Hydromorphone vs oxycodone

Participant‐reported pain intensity VAS (0‐10, lower score = less pain) · people with moderate to severe cancer pain
1 finding from 1 review

Hydromorphone vs fentanyl

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people with moderate to severe cancer pain
1 finding from 1 review

Hydromorphone vs morphine

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people with moderate to severe cancer pain
1 finding from 1 review