Table 3 Results of stiffness tests
From: Evaluation of the stiffness characteristics of rapid palatal expander screws
Type | Activations | Number | Mu | SD |
|---|---|---|---|---|
2B | 1 | 3 | 37 | 14.6 |
2B | 2 | 3 | 96 | 24.7 |
2B | 3 | 3 | 147 | 46.6 |
2B | 4 | 3 | 183 | 61.3 |
2B | 5 | 3 | 224 | 59.9 |
2B | 6 | 3 | 256 | 49.7 |
2B | 7 | 3 | 275 | 34.0 |
2B | 8 | 3 | 282 | 11.0 |
2B | 9 | 3 | 286 | 8.2 |
2B | 10 | 3 | 284 | 20.7 |
2B | 11 | 3 | 278 | 17.1 |
2B | 12 | 3 | 271 | 19.7 |
2B | 13 | 3 | 280 | 12.0 |
2B | 14 | 3 | 275 | 14.1 |
2B | 15 | 3 | 265 | 4.2 |
4B | 1 | 7 | 24 | 6.6 |
4B | 2 | 7 | 44 | 11.6 |
4B | 3 | 7 | 66 | 18.0 |
4B | 4 | 7 | 86 | 26.2 |
4B | 5 | 7 | 103 | 32.9 |
4B | 6 | 7 | 118 | 36.8 |
4B | 7 | 7 | 131 | 39.2 |
4B | 8 | 7 | 141 | 40.1 |
4B | 9 | 7 | 151 | 41.6 |
4B | 10 | 7 | 158 | 40.9 |
4B | 11 | 7 | 164 | 42.2 |
4B | 12 | 7 | 165 | 45.4 |
4B | 13 | 7 | 158 | 42.8 |
4B | 14 | 7 | 160 | 41.3 |
4B | 15 | 7 | 162 | 41.5 |
4B | 16 | 7 | 163 | 40.6 |
4B | 17 | 7 | 164 | 41.2 |
4B | 18 | 7 | 164 | 40.8 |
4B | 19 | 7 | 164 | 40.4 |
4B | 20 | 7 | 162 | 39.8 |
4B | 21 | 7 | 162 | 38.6 |
4B | 22 | 7 | 174 | 30.7 |
4B | 23 | 7 | 172 | 29.2 |
4B | 24 | 7 | 149 | 6.4 |
4B | 25 | 7 | 149 | 6.8 |