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Evidence found and GRADE certainty

538 questions · 561 findings · 59 reviews

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No studies found 184 · 32.8%GRADE not reported 185 · 33%Very low 86 · 15.3%Low 58 · 10.3%Moderate 38 · 6.8%High 10 · 1.8%

Extraction of a maxillary first permanent molar vs Extraction of a mandibular first permanent molar

Spontaneous space closure · Children aged 5 to 15 years undergoing first permanent molar extraction

Spontaneous post-extraction space closure did not differ significantly between the maxilla and mandible (pooled OR 2.06, 95% CI 0.46 to 9.28; 3 studies; I2 = 72%); ungraded.

1 finding from 1 review

Subperiosteal prepared (SPP) wound closure after tooth extraction vs Epiperiosteal prepared (EPP) wound closure after tooth extraction

MRONJ after tooth extraction (incidence proportion) · People on antiresorptive treatment undergoing tooth extraction (at risk of MRONJ)

Subperiosteal prepared (SPP) wound closure after tooth extraction showed no clear difference in MRONJ after tooth extraction (incidence proportion) compared with epiperiosteal prepared (EPP) wound closure after tooth extraction (low certainty).

1 finding from 1 review

Early extraction of a compromised first permanent molar vs Non-extraction (retained first permanent molar) or contralateral non-extraction side

Spontaneous space closure · Children aged 5 to 15 years with a compromised first permanent molar

Early extraction of a compromised first permanent molar is followed by variable spontaneous closure of the post-extraction space (about 45.5% to 85.2% of cases); certainty was not GRADE-rated (Shekelle category III).

1 finding from 1 review

Ultrasound during vertical distraction osteogenesis vs Placebo (no ultrasound) during vertical distraction

Distraction distance (bone gain, mm) · Patients with vertically deficient posterior/anterior mandibular ridges needing implants

Ultrasound during vertical distraction osteogenesis showed no clear difference in distraction distance (bone gain, mm) compared with placebo (no ultrasound) during vertical distraction; GRADE not reported.

1 finding from 1 review

Extraction at patient age <8 years vs Extraction at patient age >10 years

Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)

In the mandible, extraction before age 8 (vs after 10) increases odds of space closure (OR 5.01; low certainty).

1 finding from 1 review