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

Table 17 Intragroup comparison of thickness of keratinized tissue scores obtained by using injectable platelet-rich fibrin 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	1.64 ± 0.237	0.001a	0	1.61 ± 0.201	0.001a
1	2.68 ± 0.233		1	2.11 ± 0.193
0	1.64 ± 0.237	0.001a	0	1.61 ± 0.201	0.001a
3	2.52 ± 0.211		3	2.01 ± 0.179
0	1.64 ± 0.237	0.001a	0	1.61 ± 0.201	0.001a
6	2.45 ± 0.252		6	1.91 ± 0.166
1	2.68 ± 0.233	0.001a	1	2.11 ± 0.193	0.001a
3	2.52 ± 0.211		3	2.01 ± 0.179
1	2.68 ± 0.233	0.001a	1	2.11 ± 0.193	0.001a
6	2.45 ± 0.252		6	1.91 ± 0.166
3	2.52 ± 0.211	0.001a	3	2.01 ± 0.179	0.001a
6	2.45 ± 0.252		6	1.91 ± 0.166

^aP < 0.01 statistically significant.

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