Table 2.

PI scores for each treatment (mean ± SD; n = 21)

	Treatment/groups				p valuea Total differences
	CHX	EO+	LZ	Saline
Overall	1.07 ± 0.20	1.65 ± 0.35	1.72 ± 0.36	2.31 ± 0.42	<0.0001
Vestibular + oral	1.07 ± 0.20	1.67 ± 0.35	1.73 ± 0.36	2.32 ± 0.42	< 0.0001
All vestibular	1.29 ± 0.35	1.99 ± 0.46	2.09 ± 0.43	2.85 ± 0.61	< 0.0001
Oral	0.85 ± 0.24	1.34 ± 0.31	1.37 ± 0.38	1.78 ± 0.36	< 0.0001
Upper arch	1.08 ± 0.28	1.64 ± 0.37	1.77 ± 0.41	2.47 ± 0.44	< 0.0001
Lower arch	1.05 ± 0.24	1.69 ± 0.44	1.69 ± 0.36	2.17 ± 0.46	< 0.0001
Molar	1.16 ± 0.29	2.18 ± 0.48	2.15 ± 0.43	2.54 ± 0.46	< 0.0001
Premolars	0.97 ± 0.26	1.54 ± 0.40	1.67 ± 0.49	2.24 ± 0.38	< 0.0001
Canines	1.05 ± 0.30	1.45 ± 0.43	1.57 ± 0.36	2.30 ± 0.53	< 0.0001
Incisors	1.07 ± 0.41	1.40 ± 0.39	1.47 ± 0.47	2.17 ± 0.56	0.0001

^aUsing Friedman test