Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

338 questions · 369 findings · 33 reviews

No studies found 91 · 24.7%GRADE not reported 68 · 18.4%Very low 125 · 33.9%Low 49 · 13.3%Moderate 32 · 8.7%High 4 · 1.1%

Laser therapy vs Photodynamic therapy

Dysphagia improvement (2‐point grade or more) · patients with dysphagia in oesophageal cancer

Laser showed no clear difference in dysphagia improvement (2‐point grade or more) compared with photodynamic therapy (PDT) (moderate certainty).

1 finding from 1 review

Laser therapy vs Photodynamic therapy

Adverse effects ‐ All adverse effects · patients with dysphagia in oesophageal cancer

Laser showed no clear difference in adverse effects ‐ All adverse effects compared with photodynamic therapy (PDT) (moderate certainty).

1 finding from 1 review

CO2 laser (carbon dioxide) vs Placebo (placebo laser or placebo agent) or no treatment

Outcome not reported · Patients aged above 12 years with self-reported tooth hypersensitivity confirmed on clinical evaluation

The review found no eligible studies for this question.

1 finding from 1 review
  • Laser therapy for dentinal hypersensitivity 2021 · Cochrane All outcomes
    We did not find any eligible study to evaluate erbium:yttrium-aluminum-garnet (Er:YAG) or carbon dioxide (CO2) laser compared with placebo/no treatment.
    0 studies
    No studies found

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, 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

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