TABLE 4.

Mean values and standard deviation (SD) of tissue infiltration score in all groups

Groups	Subgroup A (1 mo)		Subgroup B (2 mo)		Subgroup C (3 mo)		P‐value
	Mean	SD	Mean	SD	Mean	SD
Group I (blood clot)	0.33aA	0.47	1.25aB	0.43	2.08aC	0.28	≤.001*
Group II (EDT + blood clot)	0.50bA	0.50	1.50aB	0.50	2.33bC	0.47	≤.001*
Group III (PRF)	0.67cA	0.47	2.00 bB	0.00	2.50 bC	0.50	≤.001*
Group IV (EDTA + PRF)	1.42dA	0.49	2.17bB	0.37	2.67cC	0.50	≤.001*
Group V (positive control)	0.50bA	0.50	0.58cA	0.49	0.58dA	0.49	1.00 NS
P‐value	≤0.001*		≤0.001*		≤0.001*

The same upper‐case letters within each row indicate differences that were not significant.

The same lower‐case letters within each column indicate differences that were not significant.

Abbreviation: NS, not significant.

^*Significant at P ≤ .05.