Question · asked by 1 review
Second molar at Nolla developmental stage 6-7 at extraction vs Second molar at later Nolla stages at extraction: Spontaneous space closure
- Population
- Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)
- Intervention
- Second molar at Nolla developmental stage 6-7 at extraction
- Comparison
- Second molar at later Nolla stages at extraction
- Outcome
- Spontaneous space closure
One study found mandibular Nolla stage 6-7 associated with better space closure (OR 55.1; single study; not GRADE-rated).
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Second molar at Nolla developmental stage 6-7 at extraction vs Second molar at later Nolla stages at extraction Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar) · 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 One study found mandibular Nolla stage 6-7 associated with better space closure (OR 55.1; single study; not GRADE-rated). Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024) All outcomes | OR 55.1 [3.0, at least 100.0] | 1 study | 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.