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Forest plot of the value of interproximal papilla recession at 12 months. Studies were divided into two subgroups according to the study design. There was a significant difference in effect (p = 0.009), and significant heterogeneity (p = 0.03) between the two subgroups. Overall, no statistically significant difference was found in IntPapilla between using prefabricaded and customized CAD/CAM abutments (MD 0.15; 95% CI −0.26, 0.56; p = 0.48) [21,23,24].
