Question · asked by 1 review
Extraction of the permanent first molar vs Not applicable (single-group prevalence): Spontaneous space closure
- Population
- Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)
- Intervention
- Extraction of the permanent first molar
- Comparison
- Not applicable (single-group prevalence)
- Outcome
- Spontaneous space closure
In the maxilla, spontaneous space closure occurred in about 85% of cases (9 studies; prevalence not GRADE-rated).
What each review found
Include earlier review versionsNo studies found 0 · 0%GRADE not reported 3 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%
| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Extraction of the permanent first molar vs None (single-group prevalence) Spontaneous space closure · Children and adolescents (<18 years) after extraction of a permanent first molar before eruption of the permanent… · Until eruption of the permanent second molar (median follow-up 4.0 years), University clinics and hospitals in 8 countries (children/adolescents <18 years), Maxilla In the maxilla, spontaneous space closure occurred in about 85% of cases (9 studies; prevalence not GRADE-rated). Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024) All outcomes | Prevalence 85.3 [73.7, 92.3] | 9 studies · 665 participants | GRADE not reported |
Extraction of the permanent first molar vs None (single-group prevalence) Spontaneous space closure · Children and adolescents (<18 years) after extraction of a permanent first molar before eruption of the permanent… · Until eruption of the permanent second molar (median follow-up 4.0 years), University clinics and hospitals in 8 countries (children/adolescents <18 years), Mandible In the mandible, spontaneous space closure occurred in about 48% of cases (11 studies; prevalence not GRADE-rated). Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024) All outcomes | Prevalence 48.1 [34.5, 62.0] | 11 studies · 1095 participants | GRADE not reported |
Extraction of the permanent first molar vs None (single-group prevalence) Spontaneous space closure · Children and adolescents (<18 years) after extraction of a permanent first molar before eruption of the permanent… · Until eruption of the permanent second molar (median follow-up 4.0 years), University clinics and hospitals in 8 countries (children/adolescents <18 years), Overall (both jaws) Spontaneous space closure occurred in about 62% of cases overall after permanent first molar extraction (13 studies; prevalence not GRADE-rated). Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024) All outcomes | Prevalence 61.6 [50.2, 71.9] | 13 studies · 1787 participants | GRADE not reported |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Spontaneous space closure after extraction of permanent first molars in children and adolescents: a systematic review and meta-analysis. 2024 All outcomes | February 2024 | 18 | Not applicable |
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.