Table 2. Comparison of mean difference between study groups in biofilm-inhibition test, using Tukey-HSD test.

Groups	ZnO 1%	TiO2 0.5%	AgO 1%	TiO2 1%	CuO 1%	Control	HA 0.5%	AgO 0.5%	HA 1%	ZnO 0.5%	CuO 0.5%
CuO 0.5%	-25	-33.3	133.3	25	108.3	33.3	33.3	-8.3	33.3	16.6	-
p-valor	0.987	0.909	<0.001	0.987	<0.001	0.909	0.909	1	0.909	1
ZnO 0.5%	-8.3	-16.6	150	41.6	125	-16.6	-16.6	8.3	-16.6	-	16.6
p-valor	1	1	<0.001	0.719	<0.001	1	1	1	1		1
HA 1%	8.3	0	166.6	85.3	141.6	0	0	25	-	-16.6	33.3
p-valor	1	1	<0.001	0.25	<0.001	1	1	0.987		1	0.909
AgO 0.5%	-16.6	-25	141.6	33.3	116.6	-25	-25	-	25	8.3	-8.3
p-valor	1	0.987	<0.001	0.909	<0.001	0.987	0.987		0.987	1	1
HA 0.5%	8.3	0	166.6	58.3	141.6	0	-	-25	0	-16.6	33.3
p-valor	1	1	<0.001	0.25	<0.001	1		0.987	1	1	0.909
Control	8.3	0	166.6	58.3	141.6	-	0	-25	0	-16.6	33.3
p-valor	1	1	<0.001	0.25	<0.001		1	0.987	1	1	0.909
CuO 1%	133.3	-141.6	25	-83.3	-	141.6	141.6	116.6	141.6	125	108.3
p-valor	<0.001	<0.001	0.987	0.015		<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
TiO2 1%	-50	-58.3	108.3	-	-83.3	58.3	58.3	33.3	58.3	41.6	25
p-valor	0.468	0.25	<0.001		0.015	0.25	0.25	0.909	0.25	0.719	0.987
AgO 1%	158.3	-166.6	-	108.3	25	166.6	166.6	141.6	166.6	150	133.3
p-valor	<0.001	<0.001		<0.001	0.987	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
TiO2 0.5%	8.3	-	-166.6	-58.3	-141.6	0	0	-25	0	-16.6	-33.3
p-valor	1		<0.001	0.25	<0.001	1	1	0.987	1	1	0.909
ZnO 1%	-	8.3	158.3	-50	133.3	8.3	8.3	-16.6	8.3	-8.3	-25
p-valor		1	<0.001	0.468	<0.001	1	1	1	1	1	0.987