Figure 3. .
Mean (standard error) percentage change in enamel microhardness at 100 µm, 200 µm, and 300 µm from the bracket edge. * P ≤ .05.
Mean (standard error) percentage change in enamel microhardness at 100 µm, 200 µm, and 300 µm from the bracket edge. * P ≤ .05.