Table 2:
Comparison of mean GI score before and after treatment for each of brushes.
Mean ±SD
Before treatment
After treatment
T
p-value
pulsar
1.18 ± 0.5
0.65± 0.38
5.2
<0.001
CrossAction
0.9 ± 0.45
0.62 ±0.54
3.7
<0.001
butler
0.73 ± 0.51
0.45 ± 0.44
3.8
<0.001