Table 2a.

The increase in root length in millimeters and percentage of the PRP and PRF groups during the four evaluation periods.

	PRP group (mean ± SD)	PRF group (mean ± SD)	p-value
3 months (mm, %)	0.225 ± 0.19 (1.52%±1.43%)	0.155 ± 0.099 (1.02%±0.673%)	0.406
6 months (mm, %)	0.557 ± 0.23 (3.7%±1.43%)	0.391 ± 0.187 (2.57%±1.23%)	0.127
9 months (mm, %)	0.996 ± 0.35 (6.6%±2.4%)	0.793 ± 0.378 (5.2%±2.48%)	0.174
12 months (mm, %)	1.48 ± 0.37 (9.88%±2.85%)	1.24 ± 0.54 (8.19%±3.64%)	0.355

*Significant at P-value < 0.1.

**Highly significant at P-value < 0.05.

SD = Standard Deviation