Table 2.

Periodontal indices and differences of P value of the four groups

Indices	Group	n	Mean	SD	1 vs 2	1 vs 3	1 vs 4	2 vs 3	2 vs 4	3 vs 4
PI	1	20	1.7145	0.36215	0.198	0.033	0.000	0.388	0.000	0.000
	2	20	1.5663	0.49612
	3	20	1.4671	0.33339
	4	20	0.2034	0.18343
	Total	80	1.2378	0.70330
GI	1	20	1.2622	0.67947	0.010	0.002	0.000	0.560	0.000	0.000
	2	20	0.8541	0.49963
	3	20	0.7642	0.48007
	4	20	0.0080	0.02462
	Total	80	0.7221	0.65913
GBI	1	20	11.2500	2.76967	0.000	0.000	0.000	0.000	0.000	0.370
	2	20	4.2000	3.88790
	3	20	0.7000	1.12858
	4	20	0.0005	0.00224
	Total	80	4.0376	5.09008
SBI	1	20	1.9140	0.68797	0.004	0.000	0.000	0.000	0.000	0.018
	2	20	1.3196	0.93427
	3	20	0.4951	0.53863
	4	20	0.0053	0.02023
	Total	80	0.9335	0.97033
PBI	1	20	1.6316	0.72593	0.019	0.000	0.000	0.002	0.000	0.015
	2	20	1.1516	0.88115
	3	20	0.5036	0.56073
	4	20	0.0051	0.02015
	Total	80	0.8230	0.88162
PDI	1	20	2.2036	0.56083	0.000	0.000	0.000	0.000	0.000	0.339
	2	20	1.0822	0.64409
	3	20	0.1390	0.14886
	4	20	0.0071	0.01479
	Total	80	0.8580	0.98291
BOP	1	20	0.7065	0.09674	0.193	0.825	0.704	0.129	0.094	0.873
	2	20	3.0961	11.51093
	3	20	0.3028	0.10093
	4	20	0.0113	0.01788
	Total	80	1.0292	5.77720

P<0.008 is a significant difference