Effect of Green Tea on the Level of Salivary Interleukin-1 Beta in Patients with Chronic Periodontitis: A Randomized Clinical Trial

Table 2

Comparison of O.D. values before intervention and after 6 weeks in each group as well as comparison of resultant data between the two groups.

Groups	Number	Mean ± SD (before)	Mean ± SD (after)	value (each group)	value (intergroup)
A	15	1/71 ± 75/0	0.79 ± 0.41	0.001	0.0001
B	15	1.49 ± 0.78	1.44 ± 0.63	0.307

SD, standard deviation. Significant.