Group n= Mean sd P-value 4(Test) 14 1.43 0.28 df=22 t=2.84 p<0.01 5(Control) 10 1.07 0.34 The results indicate that there is a statistically significant difference between mean concentration of IL-1β in GCF for group 3 and 5 (df=22, t=2.84, p<0.01)

Table 3.4: Comparison of TNF-α concentration in GCF between Group 4 and Group 5.