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