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

Table 15 Intragroup comparison of width of keratinized tissue scores obtained by using injectable platelet-rich fibrin + collagen membrane and collagen membrane at different time intervals using Wilcoxon signed rank test

i-PRF + CM in mo	mean ± SD	P value	CM in mo	mean ± SD	P value
0	1.6 ± 0.5	0.001a	0	1.35 ± 0.48	0.001a
1	2.85 ± 0.48		1	2.45 ± 0.6
0	1.6 ± 0.5	0.001a	0	1.35 ± 0.48	0.001a
3	3.5 ± 0.51		3	2.9 ± 0.44
0	1.6 ± 0.5	0.001a	0	1.35 ± 0.48	0.001a
6	3.4 ± 0.59		6	2.75 ± 0.44
1	2.85 ± 0.48	0.001a	1	2.45 ± 0.6	0.001a
3	3.5 ± 0.51		3	2.9 ± 0.44
1	2.85 ± 0.48	0.001a	1	2.45 ± 0.6	0.001a
6	3.4 ± 0.59		6	2.75 ± 0.44
3	3.5 ± 0.51	0.001a	3	2.9 ± 0.44	0.001a
6	3.4 ± 0.59		6	2.75 ± 0.44

^aP < 0.01 statistically significant.

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