Fig. 8From: Navigated Antral Bone Expansion (NABE): a prospective study on 35 patients with 4 months of follow-up post implant loadingBox plots showing the median, quartile, and minimum and maximum values of the distance between the alveolar ridge and the sinus floor (mm) measured before and after surgery . Boxes contain 50% of all values; the horizontal lines inside the boxes indicate the medians and the vertical lines extend to 1.5 of the interquartile rangeBack to article page