Table 1.
Comparison of tooth model parameters and force of initial failure. Also reported are the radius of curvature of the occlusal surface of the tooth models, and force of initial failure scaled by both shell volume and by the cube root of volume, to estimate energy release.
| shape | h | r | radius of curvature | species | F (N) | ±s.d. | F/V (N m−3) | ±s.d. |
 (N m−1) |
±s.d. |
|---|---|---|---|---|---|---|---|---|---|---|
| −2 | 0.5 | 0.4 | 0.4 | N. ostrina | 379.5724 | 53.72428 | 351.4559 | 49.7447 | 369.9588 | 52.363583 |
| N. lamellosa | 272.9533 | 28.76839 | 252.7346 | 26.6374 | 290.444 | 28.036758 | ||||
| −1 | 0.25 | 0.4 | 0.8 | N. ostrina | 319.3861 | 26.07399 | 295.7279 | 24.14258 | 311.2969 | 25.413603 |
| N. lamellosa | 57.84152 | 7.616884 | 47.63296 | 7.789641 | 61.54796 | 8.1048107 | ||||
| 0 | 0 | 0.4 | 0 | N. ostrina | 150.5768 | 14.28893 | 139.423 | 13.23049 | 146.7631 | 13.927032 |
| N. lamellosa | 61.73644 | 3.061052 | 74.38125 | 3.688014 | 65.69246 | 3.2572019 | ||||
| 1 | −0.25 | 0.4 | −0.8 | N. ostrina | 166.9758 | 18.94995 | 154.6072 | 17.54625 | 162.7467 | 18.469997 |
| N. lamellosa | 57.6576 | 2.697822 | 69.46699 | 3.250388 | 61.35226 | 2.8706967 | ||||
| 2 | −0.5 | 0.4 | −0.4 | N. ostrina | 142.7502 | 14.45487 | 132.1761 | 13.38414 | 139.1347 | 14.088765 |
| N. lamellosa | 51.25308 | 3.394624 | 61.7507 | 4.089908 | 54.53734 | 3.6121485 | ||||
| H1 | 0.05 | 0.1 | 1 | N. ostrina | 157.4508 | 12.03038 | 145.7877 | 11.13924 | 153.4629 | 11.72568 |
| N. lamellosa | 50.09194 | 7.678509 | 60.35174 | 9.251215 | 53.30179 | 8.170542 | ||||
| H2 | 0.15 | 0.1 | 0.333 | N. ostrina | 145.6952 | 15.94638 | 134.903 | 14.76517 | 142.0052 | 15.5425 |
| N. lamellosa | 47.41974 | 9.072596 | 57.13222 | 10.93084 | 50.45836 | 9.653961 | ||||
| H3 | 0.25 | 0.1 | 0.2 | N. ostrina | 125.9957 | 11.13195 | 116.6627 | 10.30736 | 122.8045 | 10.85001 |
| N. lamellosa | 50.75364 | 11.67119 | 61.14896 | 14.06168 | 54.00589 | 12.41908 | ||||
| H4 | 0.35 | 0.1 | 0.143 | N. ostrina | 103.0125 | 14.41341 | 95.38196 | 13.34575 | 100.4035 | 14.04836 |
| N. lamellosa | 48.52072 | 7.276258 | 58.4587 | 8.766576 | 51.62989 | 7.742515 | ||||
| H5 | 0.45 | 0.1 | 0.111 | N. ostrina | 96.04356 | 11.74515 | 88.92922 | 10.87514 | 93.61102 | 11.44768 |
| N. lamellosa | 36.6542 | 5.42367 | 44.16169 | 6.534542 | 39.00297 | 5.771215 | ||||
| R1 | 0.25 | 0.3 | 0.6 | N. ostrina | 145.9132 | 24.15595 | 135.1049 | 22.36662 | 142.2176 | 23.54414 |
| N. lamellosa | 54.38548 | 5.915001 | 65.52467 | 7.126507 | 57.87046 | 6.29403 | ||||
| R2 | 0.25 | 0.2 | 0.4 | N. ostrina | 123.2947 | 17.48208 | 114.1617 | 16.18711 | 120.1719 | 17.0393 |
| N. lamellosa | 44.44848 | 5.362634 | 53.55239 | 6.461005 | 47.2967 | 5.706268 | ||||
| R3 | 0.25 | 0.1 | 0.2 | N. ostrina | 116.0134 | 14.04102 | 107.4199 | 13.00095 | 113.0751 | 13.6854 |
| N. lamellosa | 51.09252 | 6.843818 | 61.55725 | 8.245564 | 54.36649 | 7.282365 | ||||
| R4 | 0.25 | 0.05 | 0.1 | N. ostrina | 107.1584 | 16.07942 | 99.22076 | 14.88835 | 104.4444 | 15.67217 |
| N. lamellosa | 38.93308 | 8.411486 | 46.90733 | 10.13432 | 41.42788 | 8.950487 | ||||
| R5 | 0.25 | 0.025 | 0.05 | N. ostrina | 78.03683 | 12.77552 | 72.25633 | 11.82919 | 76.06036 | 12.45195 |
| N. lamellosa | 31.6202 | 4.771286 | 38.09663 | 5.748537 | 33.6464 | 5.077026 |