Question · asked by 1 review
Metal-free single crowns (full-contour zirconia) vs Cast gold (conventional metal) single crowns: Crown failure
- Population
- Adults (18 years or older) needing a single crown in the molar or premolar region
- Intervention
- Metal-free single crowns (full-contour zirconia)
- Comparison
- Cast gold (conventional metal) single crowns
- Outcome
- Crown failure
It is very uncertain whether metal-free single crowns (full-contour zirconia) changes crown failure compared with cast gold (conventional metal) single crowns (very low certainty).
What each review found
Include earlier review versionsNo studies found 0 · 0%GRADE not reported 0 · 0%Very low 2 · 100%Low 0 · 0%Moderate 0 · 0%High 0 · 0%
| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Metal-free single crowns (full-contour zirconia) vs Cast gold (conventional metal) single crowns Crown failure · Adults (18 years or older) needing a single crown in the molar or premolar region · 12 months It is very uncertain whether metal-free single crowns (full-contour zirconia) changes crown failure compared with cast gold (conventional metal) single crowns (very low certainty). Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane All outcomes | OR 0.83 [0.05, 13.44] | 1 study · 194 participants | Very low |
Metal-free single crowns (full-contour zirconia) vs Cast gold (conventional metal) single crowns Crown failure · Adults (18 years or older) needing a single crown in the molar or premolar region · 60 months It is very uncertain whether metal-free single crowns (full-contour zirconia) changes crown failure compared with cast gold (conventional metal) single crowns (very low certainty). Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane All outcomes | OR 17.52 [5.07, 60.54] | 1 study · 158 participants | Very low |
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.