Comparative evaluation of effect of injectable platelet-rich fibrin with collagen membrane compared with collagen membrane alone for gingival recession coverage

Table 9 Intragroup comparison of mean recession depth scores obtained by using injectable platelet-rich fibrin + collagen membrane and collagen membrane at different time intervals using paired t test

i-PRF + CM in mo	mean ± SD	P value	CM in mo	mean ± SD	P value
0	2.7 ± 0.86	0.001a	0	2.9 ± 0.71	0.001a
1	0.25 ± 0.4		1	0.5 ± 0.51
0	2.7 ± 0.86	0.001a	0	2.9 ± 0.71	0.001a
3	0.5 ± 0.5		3	0.95 ± 0.51
0	2.7 ± 0.86	0.001a	0	2.9 ± 0.71	0.001a
6	0.9 ± 0.64		6	1.3 ± 0.57
1	0.25 ± 0.4	0.021b	1	0.5 ± 0.51	0.001a
3	0.5 ± 0.5		3	0.95 ± 0.51
1	0.025 ± 0.4	0.001a	1	0.5 ± 0.51	0.001a
6	0.9 ± 0.64		6	1.3 ± 0.57
3	0.5 ± 0.5	0.002a	3	0.95 ± 0.51	0.005a
6	0.9 ± 0.64		6	1.3 ± 0.57

^aP < 0.01 statistically significant.

^bP < 0.05 statistically significant.

Level of significance at P < 0.05. CM: Collagen membrane; i-PRF: Injectable platelet-rich fibrin.