Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

442 questions · 468 findings · 55 reviews

No studies found 96 · 20.5%GRADE not reported 54 · 11.5%Very low 172 · 36.8%Low 87 · 18.6%Moderate 40 · 8.5%High 19 · 4.1%

Extraction of the primary (baby) canine (single primary tooth extraction) vs No extraction (non-intervention control)

Overall treatment time wearing orthodontic appliances · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Extraction of the primary (baby) canine (single primary tooth extraction) vs No extraction (non-intervention control)

Costs and cost‐effectiveness · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Time taken for the canine to erupt into the mouth · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Overall treatment time wearing orthodontic appliances · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Environmental interventions vs no intervention

Adverse events · children (aged 0–6 years)

The review found no eligible studies for this question.

2 findings from 1 review

Environmental interventions vs no intervention

Blood lead levels (continuous)Blood lead level at end of duration Scale: 0–30 · children (aged 0–6 years)
2 findings from 1 review

Personal protective equipment (PPE) types: powered, air‐purifying respirator (PAPR) plus coverall vs N95 mask plus gown

Any contamination fluorescent marker · healthcare worker volunteers

It is very uncertain whether personal protective equipment (PPE) types: powered, air‐purifying… changes any contamination: fluorescent marker compared with N95 mask plus gown (very low certainty).

1 finding from 1 review