[Table/Fig-1a]:

Mean score of plaque index at different intervals.

Parameters	Full mouth
PI	Mean	S.D.	F-value	p-value
Baseline	2.74	0.31	65.458	<0.001
At 3 months	1.68	0.27
At 6 months	1.46	0.23
At 9 months	1.35	0.16