Evaluation of the clinical efficacy of green tea extract gel as local drug delivery for periodontitis

Table 1 Intra-group comparison of baseline and 1-month values

		Intra group comparison					t	df	P value
		Mean difference	SD	SEM	95%CI of the difference
					Lower	Upper
OHI simplified	Baseline vs 1 month	1.62500	0.34774	0.07776	1.46225	1.78775	20.899	19	< 0.001a
Plaque index	Green tea	0.71250	0.25346	0.05667	0.59388	0.83112	12.572	19	< 0.001a
	Ornidazole gel	0.65750	0.23881	0.05340	0.54573	0.76927	12.313	19	< 0.001a
Probing pocket depth	Green tea	2.80000	0.70830	0.09144	2.61703	2.98297	30.621	59	< 0.001a
	Ornidazole gel	2.48333	0.77002	0.09941	2.28441	2.68225	24.981	59	< 0.001a
Clinical attachment level	Green tea	2.86667	0.81233	0.10487	2.65682	3.07651	27.335	59	< 0.001a
	Ornidazole gel	2.51667	0.77002	0.09941	2.31775	2.71559	25.316	59	< 0.001a

^aP < 0.05.

OHI: Oral hygiene index.