From: Clinical observation of autologous platelet rich fibrin assisted revascularization of mature permanent teeth
group
n
Remarkable effect
Effective
invalid
Total effective rate
experience group
10
7 (70.00)
3 (30.00)
0 (0.00)
10(100.00)
control group
4 (40.00)
1 (10.00)
5 (50.00)
5(50.00)
x2
4.267
P
0.039