Table 3b.

The decrease in apical diameter 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, %)	0.25 ± 0.167 (9.91%±6.03%)	0.34 ± 0.2 (15.7%±8.84%)	0.246
6 months (mm, %)	0.656 ± 0.43 (27.29%±14.1%)	0.87 ± 0.48 (38.23%±15.03%)	0.123
9 months (mm, %)	2.17 ± 3.86 (51.98%±19.64%)	1.33 ± 0.57 (58.89%±10.59%)	0.611
12 months (mm, %)	2.49 ± 3.93 (64.83%±18.5%)	1.73 ± 0.665 (76.75%±8.5%)	0.437

*Significant at P-value < 0.1.

**Highly significant at P-value < 0.05.

SD = Standard Deviation