Figure 3From: Shear bond strength of different retainer wires and bonding adhesives in consideration of the pretreatment process Shear bond strengths (SBS) of the retainer-adhesive-combinations tested with and without prior sandblasting. Boxplots show median and interquartile range while whiskers denote the data range. ° outliers (>1.5 x IQR beyond upper/lower quartile); * extreme values (>3 x IQR beyond upper/lower quartile).Back to article page