Question · asked by 1 review
Metal-free implant abutments (zirconia) vs Metal implant abutments (titanium): Marginal bone level change
- Population
- Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown
- Intervention
- Metal-free implant abutments (zirconia)
- Comparison
- Metal implant abutments (titanium)
- Outcome
- Marginal bone level change
Metal-free implant abutments (zirconia) showed no clear difference in marginal bone level change (MBLC) compared with metal implant abutments (titanium); GRADE not reported.
What each review found
Include earlier review versionsNo studies found 0 · 0%GRADE not reported 2 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%
| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Metal-free implant abutments (zirconia) vs Metal implant abutments (titanium) Marginal bone level change (MBLC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown on… · 12 months, Distal Metal-free implant abutments (zirconia) showed no clear difference in marginal bone level change (MBLC) compared with metal implant abutments (titanium); GRADE not reported. Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane All outcomes | MD -0.05 [-0.15, 0.04] | 2 studies · 47 participants | GRADE not reported |
Metal-free implant abutments (zirconia) vs Metal implant abutments (titanium) Marginal bone level change (MBLC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown on… · 12 months, Mesial Metal-free implant abutments (zirconia) led to lower marginal bone level change (MBLC) compared with metal implant abutments (titanium); GRADE not reported. Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane All outcomes | MD -0.39 [-0.43, -0.35] | 2 studies · 47 participants | GRADE not reported |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Metal‐free materials for fixed prosthodontic restorations 2017 · Cochrane All outcomes | 2017-05 | Not listed | Not assessed |
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.