Fig. 5From: Synergistic effect of wire bending and salivary pH on surface properties and mechanical properties of orthodontic stainless steel archwiresSEM images of straight rectangular SS wires at ×2000 magnification (a–d). Representative SEM images of SS wire of control group, pH 5.6, 6.6, and 7.6, respectively. White arrows indicate typical manufacturing striations; green arrows indicate specific surface irregularitiesBack to article page