Figure 5
Scanning electron micrographs demonstrating intact biofilm 100 microns from a sectioned sample edge. (a) The cut edge of the tooth root with the gouges from the diamond bur clearly visible. The dashed box indicates where higher-resolution images were obtained. (b) ×25,000 magnification demonstrating intact rod-like microorganisms in a biofilm. (c) ×80,000 magnification showing extensive extracellular matrix as fine strands between the microorganisms.
