Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances: Gingival index (GI)
- Population
- Adults undergoing orthodontic treatment
- Intervention
- Clear aligners (Invisalign / thermoformed aligners)
- Comparison
- Fixed appliances
- Outcome
- Gingival index (GI)
A single study found no significant difference in gingival index between aligners and fixed appliances in adults at 6-12 weeks (MD -0.10, 95% CI -0.35 to 0.15; ungraded).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances Gingival index (GI) · Adults undergoing orthodontic treatment · 6 to 12 weeks, Adults A single study found no significant difference in gingival index between aligners and fixed appliances in adults at 6-12 weeks (MD -0.10, 95% CI -0.35 to 0.15; ungraded). Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and… (2021) All outcomes | MD -0.10 [-0.35, 0.15] | 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 |
|---|---|---|---|
| Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and Meta-Analysis. 2021 All outcomes | 31 May 2021 (updated; initial search 21 August 2020) | 21 | Critically Low / Critically Low |
Related questions
The same intervention and outcome, asked in another population or against another comparator.
- Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances · Adolescents/teenagers undergoing orthodontic treatment · 1 review
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.