Table 1 Mean change in surface area (measured in square millimeters, mm²) of the driver heads in star-shaped and hexagonal designs after different cycles of opening and closing
From: A comparative study of deformation in hexagonal and star-shaped implant screwdriver heads
Cycles | Std. deviation ± Mean | |
|---|---|---|
Hexagonal | Star-shaped | |
0 | 0.00 ± 228.17 | 0.0 ± 264.85 |
50 | 0.36 ± 227.49 | 0.21 ± 264.32 |
100 | 0.33 ± 226.87 | 0.33 ± 263.59 |
200 | 0.42 ± 226.14 | 0.42 ± 261.99 |
300 | 0.37 ± 225.37 | 0.31 ± 260.7 |
Total | 0.082 ± 226.809 | 0.082 ± 263.088 |