RESULTS
In this double-blind, split-mouth clinical trial, 18 maxillary sinuses from 9 patients with bilateral posterior partial or edentulous maxilla were examined. Sinus floor elevation was performed on each patient, and CGF was used on one side, while xenograft was used on the other side. The Kolmogorov-Smirnov test indicated that using the alizarin red staining technique, all variables except connective tissue had a normal distribution, and thus parametric tests were used to compare the control and intervention groups. For the connective tissue, a non-parametric test (Wilcoxon) was used. Similarly, all variables in the hematoxylin-eosin histologic technique were normally distributed, and thus parametric tests were applied.