Summary of findings 6. Removable partial dentures. Tooth‐tissue‐supported conditions: same material, different dual‐impression techniques.
| Altered cast compared with one‐piece cast (polyether) for final impression | ||||||
| Population: people requiring removable partial dentures Setting: university dental clinic Intervention: altered cast Comparison: one‐piece cast | ||||||
| Outcomes | Anticipated absolute effects* (95% CI) | Relative effect (95% CI) | Number of participants (studies) | Quality of the evidence (GRADE) | Comments | |
| Participant‐reported oral health‐related quality of life | Not measured | |||||
| Participant‐reported quality of the denture: general satisfaction | The study reported that 50 of 57 participants were moderately to completely satisfied, with no significant difference between the groups. Data not reported separately for each group. | 57 (1) | ⊕⊕⊝⊝ low1 2 | |||
| Number of intaglio adjustments Follow up: one year |
194 per 1000 | 278 per 1000 (119 to 649) |
RR 1.43 (0.61 to 3.34) |
72 (1) | ⊕⊝⊝⊝ 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 certainty: We are very confident that the true effect lies close to that of the estimate of the effect Moderate certainty: 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 certainty: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect Very low certainty: 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 one level as allocation concealment was unclear and there was a high risk of bias for incomplete outcome data and blinding of personnel
2 Downgraded one level as a single study contributed data for this outcome
3 Downgraded one level because 95% CI is wide