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Table 1 Descriptive statistics of membrane thickness and perforation rate

From: Crestal endoscopic approach for evaluating sinus membrane elevation technique

Group Membrane thickness Mean ± SD (mm) Median (range) Percentage (%) (from total) Perforation rate (%) (from total)
A (n = 4) < 2 mm 1.30 ± 0.53 1.25 (0.8–1.9) 33.33 16.67
B (n = 8) > 2 mm 5.87 ± 2.70 5.50 (2.2–10.4) 66.66 0