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

Table 13 Intragroup comparison of relative attachment level 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	7.3 ± 0.8	0.001a	0	7.05 ± 0.82	0.001a
1	5.6 ± 1.3		1	5.4 ± 0.94
0	7.3 ± 0.8	0.001a	0	7.05 ± 0.82	0.001a
3	5.25 ± 1.29		3	5.05 ± 0.94
0	7.3 ± 0.8	0.001a	0	7.05 ± 0.82	0.001a
6	5.55 ± 1.09		6	5.45 ± 0.82
1	5.6 ± 1.3	0.021b	1	5.4 ± 0.94	0.124
3	5.25 ± 1.29		3	5.05 ± 0.94
1	5.6 ± 1.3	0.589	1	5.4 ± 0.94	0.868
6	5.55 ± 1.06		6	5.45 ± 0.82
3	5.52 ± 1.29	0.06	3	5.05 ± 0.94	0.021a
6	5.55 ± 1.06		6	5.45 ± 0.82

^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.