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A novel approach to the pull-out test using silica-coated and silanized steel spreaders was designed to avoid influence from the post-cement interface. In this study, this test was applied to compare the post retention of adhesive versus conventional cements.Canals of 90 single-rooted human teeth were prepared to size 60 taper .02; trimmed to an 8-mm root canal length; irrigated with 40% citric acid,...