Fig. 4From: Antimicrobial efficacy of self-locomotive manganese oxide nanozyme-doped diatom microbubbler on orthodontic brackets in vitroScanning electron microscopy images of orthodontic brackets after each biofilm removal treatment. The images in the upper row were taken at 200 × (scale bar = 500 μm), and the images in the lower row were taken at 10,000 × (scale bar = 10 μm)Back to article page