Summary of findings 2. Complete dentures: same technique, different final‐impression materials.
| Wax versus polysulfide rubber for making dentures for completely edentulous people | ||||||
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Population: completely edentulous people Setting: university dental clinic Intervention: wax Comparison: polysulfide rubber | ||||||
| Outcomes | Anticipated absolute effects* (95% CI) | Relative effect (95% CI) | Number of participants (studies) | Quality of the evidence (GRADE) | Comments | |
| Risk with rubber | Risk with wax | |||||
| Participant‐reported oral health‐related quality of life (OHIP‐EDENT) | Not measured | |||||
| Participant‐reported quality of the denture | Not measured | |||||
| Number of border adjustments and sore spots after insertion of denture Follow‐up: one year |
571 per 1000 | 463 per 1000 (217 to 971) | RR 0.81 (0.38 to 1.70) | 27 (1 RCT) | ⊕⊝⊝⊝ very low1 2 3 | |
| *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 risk of bias due to the single study contributing data for this outcome being at unclear risk of bias in many domains
2 Downgraded for imprecision due to the wide 95% CI starting from 0.38 highly beneficial to 1.70 no benefit.
3 Downgraded for indirectness due to the single study with only 27 participants. Hence generalisation becomes difficult.