Table 4: Comparison of swelling scores of two groups at 1^st and 7^th day between two groups.

Follow-up	Injectable platelet rich fibrin	Collagen plug	Z score	P-value
1^st day	11.96	15.04	-1.180	0.238
7^th day	9.62	17.38	-2.766	0.006*
Sum of Ranks	91.00	78.00	-	-
P-value	0.001*	0.001*	-	-

Man-Whitney U test; Wilcoxon sign rank test ;p≤0.05 was considered statistically significant.