Fig. 4

Forest plot on the effect of interceptive extraction of primary canine (versus no extraction) on the eruption of the impacted permanent canine of the same quadrant (CI = confidence interval; Ctr = control group [no extraction]; ExIII = extraction of the primary canine; n/N = events/sample; OR = odds ratio). *Meta-analysis #2 omits the three green-coloured studies that were included in meta-analysis #1