Table 3.

The mean length of inner screw

Group	Screw hole 1	Screw hole 2	Screw hole 3	Screw hole 4
1 (mm)	40.30 ± 2.05	67.69 ± 2.78	9.58 ± 0.85	7.11 ± 0.73
2 (mm)	42.53 ± 1.29	68.52 ± 1.38	10.10 ± 0.33	7.21 ± 0.32
3 (mm)	43.84 ± 1.86	70.75 ± 1.92	10.26 ± 0.47	7.39 ± 0.51
4 (mm)	45.63 ± 1.92	71.91 ± 2.11	10.89 ± 0.72	7.52 ± 0.69