Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

13 questions · 13 findings · 2 reviews · Endodontics and dental trauma · All outcomes

No studies found 0 · 0%GRADE not reported 11 · 84.6%Very low 2 · 15.4%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Low‐level laser therapy vs Low-level laser therapy (LLLT) + calcium hydroxide

Radiological failure · Children with extensive decay involving the dental pulp in primary teeth

Low-level laser therapy (LLLT) showed no clear difference in radiological failure compared with low-level laser therapy (LLLT) + calcium hydroxide; GRADE not reported.

1 finding from 1 review

Low‐level laser therapy vs Control (no laser device used)

Maximum pain (verbal rating scale, VRS) · People requiring retreatment of periapical lesions (failed root canal therapy)

It is very uncertain whether low energy level laser therapy (LLLT) changes maximum pain (verbal rating scale, VRS) compared with control (no laser device used) (very low certainty).

1 finding from 1 review

Low-level laser therapy (LLLT) + calcium hydroxide vs Calcium hydroxide (CH)

Radiological failure · Children with extensive decay involving the dental pulp in primary teeth

Low-level laser therapy (LLLT) + calcium hydroxide showed no clear difference in radiological failure compared with calcium hydroxide (CH); GRADE not reported.

1 finding from 1 review

Placebo (sham irradiation, laser inactive) vs Control (no laser device used)

Maximum pain (verbal rating scale, VRS) · People requiring retreatment of periapical lesions (failed root canal therapy)

Placebo (sham irradiation, laser inactive) led to lower maximum pain (verbal rating scale, VRS) compared with control (no laser device used); GRADE not reported.

1 finding from 1 review