Summary of findings 3. Complete dentures: same technique, different final‐impression materials.
| Alginate versus silicone for making dentures for completely edentulous people | ||||||
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Population: completely edentulous people Setting: university dental clinic Intervention: alginate Comparison: silicone | ||||||
| Outcomes | Anticipated absolute effects* (95% CI) | Relative effect (95% CI) | Number of participants (studies) | Quality of the evidence (GRADE) | Comments | |
| Risk with silicone | Risk with alginate | |||||
| Participant‐reported oral health‐related quality of life (OHIP‐ EDENT) (low score better oral health) Follow‐up: 2 weeks |
Mean score 28.9 | MD 7.2 higher on average (2.71 higher to 11.69 higher) | ‐ | 144 (1 RCT) | ⊕⊕⊝⊝ low1, 2 | |
| Participant‐reported quality of the denture Follow‐up: two weeks |
The study reported that there was no difference between groups for comfort, but that more participants reported better stability and chewing efficiency with silicone. Data were not amenable to analysis | |||||
| Number of border adjustments and sore spots after insertion of denture Follow‐up: two weeks |
Not measured | |||||
| *The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: confidence interval; RR: risk ratio; OR: odds ratio | ||||||
| GRADE Working Group grades of evidence High quality: We are very confident that the true effect lies close to that of the estimate of the effect Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect | ||||||
1 Downgraded for indirectness as it is the only study that has used alginate as final (wash) impression hence it cannot be generalised.
2 Downgraded for imprecision as the 95% CI is wide and includes the possibility of the mean difference being clinically unimportant.