Table 6 Quality of evidence that LLLT accelerates tooth movement and modulate acute pain

Studies

3

13

Subjects

60

333

Study design

RCT, CCT

RCT

Preliminary grade of evidence

⊕ ⊕ ⊕

⊕ ⊕ ⊕⊕

Study quality ^a

1

1

Inconsistency ^a

0

1

Indirectness/Relevance ^a

1

0

Imprecise data ^b

0

0

Risk of publication bias ^a

0

0

Large effect ^c

0

0

Dose-response ^d

0

0

Confounding factors ^d

0

0

Overall quality of evidence

⊕ Very low

⊕⊕ Low