COMPARISON 1: FDP versus RPDP for Treated and untreated Shortened Dental Arches (31–38).

EXPLANATION OF TABLE ABOVE:*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (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). KEY: CI: Confidence interval; RR: Risk ratio; HR: Hazard ratio.Explanation for the GRADE Working Group QUALITY of evidence: High quality: Further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: We are very uncertain about the estimate.REASONS for the QUALITY of the Evidence: 1High risk of bias for blinding, selective reporting bias and other bias; 2Small sample size; 3No significant difference (p = 0.092).