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Shear bond strength (SBS (MPa); medians, lower and upper quartiles, and minima and maxima) of OptiBond FL (without/with 1% benzalkonium chloride (BAC) and the four experimental conditions (i.e., normal/artificially eroded dentin and 24 h/1-year (yr) storage); n = 16/group). Different lowercase letters show significant differences between the groups.
