Figure 6

Only One File Blue instrument, non-used at 100× (1), 500× (2), 1000× (3), after the first use (4), after the second use (5), and after the third use (6). Legend: Blue arrow indicates distortion.

Only One File Blue instrument, non-used at 100× (1), 500× (2), 1000× (3), after the first use (4), after the second use (5), and after the third use (6). Legend: Blue arrow indicates distortion.