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What do systematic reviews say?

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Evidence found and GRADE certainty

779 questions · 866 findings · 43 reviews · Oral and maxillofacial surgery

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No studies found 188 · 21.7%GRADE not reported 548 · 63.3%Very low 81 · 9.4%Low 37 · 4.3%Moderate 8 · 0.9%High 4 · 0.5%

Surgical removal (extraction) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Arch length (dental arch dimensional change) · Adolescents or adults with asymptomatic disease-free impacted wisdom teeth

Surgical removal (extraction) of asymptomatic disease-free impacted… may leads to lower arch length (dimensional changes in the dental arch) compared with retention (conservative management) of asymptomatic disease-free… (low certainty).

1 finding from 1 review

Surgical removal (extraction) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Little's irregularity index (dimensional changes in the dental arch) · Adolescents or adults with asymptomatic disease-free impacted wisdom teeth

Surgical removal (extraction) of asymptomatic disease-free impacted… showed no clear difference in little's irregularity index (dimensional changes in the dental arch) compared with retention (conservative management) of asymptomatic disease-free… (low certainty).

1 finding from 1 review

Surgical removal (extraction) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Costs (days off work/study; direct costs of retention or removal) · Adolescents or adults with asymptomatic disease-free impacted wisdom teeth

The review found no eligible studies for this question.

1 finding from 1 review

Surgical removal (extraction) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Health‐related quality of life · Adolescents or adults with asymptomatic disease-free impacted wisdom teeth

The review found no eligible studies for this question.

1 finding from 1 review

Triangular flap vs Envelope flap

Permanent altered tongue, chin, or lip sensation · Adults with mandibular third molars requiring removal

It is very uncertain whether triangular flap changes permanent altered tongue, chin, or lip sensation compared with envelope flap (very low certainty).

1 finding from 1 review

Surgical removal (extraction) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Intercanine width · Adolescents or adults with asymptomatic disease-free impacted wisdom teeth

Surgical removal (extraction) of asymptomatic disease-free impacted… showed no clear difference in intercanine width (dimensional changes in the dental arch) compared with retention (conservative management) of asymptomatic disease-free… (low certainty).

1 finding from 1 review