Table 1:
Comparison of mean PI score before and after treatment for each of brushes.
Mean ±SD
Before treatment
After treatment
T
P value
pulsar
1.55 ± 0.51
0.66 ± 0.44
7.6
<0.001
CrossAction
1.63 ± 0.44
0.55 ± 0.6
4.9
<0.001
Butler
0.92 ± 0.59
0.39 ± 0.44
4.9
<0.001