Table 4.
Bite force at the incisor, premolar and third molar predicted by models with altered muscle vector orientations. Positive angles represent rotations around the medio-lateral axis in an anterior direction. Percentage difference from bite force of original models (given in Table1) calculated. Muscle orientations measured in the parasagittal plane
| Bite force (N) | % difference | |||||
|---|---|---|---|---|---|---|
| I | PM | M3 | I | PM | M3 | |
| SM +10° | 1467 | 3154 | 4401 | 5.63 | 5.68 | 5.66 |
| SM −10° | 1287 | 2766 | 3863 | −7.31 | −7.31 | −7.26 |
| DM +10° | 1386 | 2980 | 4161 | −0.21 | −0.15 | −0.11 |
| DM −10° | 1383 | 2970 | 4144 | −0.42 | −0.48 | −0.52 |
| IOZM +10° | 1494 | 3205 | 4470 | 7.56 | 7.41 | 7.31 |
| IOZM −10° | 1264 | 2722 | 3804 | −8.96 | −8.79 | −8.67 |
| MP +10° | 1378 | 2964 | 4140 | −0.76 | −0.67 | −0.61 |
| MP −10° | 1397 | 2998 | 4181 | 0.58 | 0.46 | 0.37 |
I, incisor; PM, premolar; M3, third molar; SM, superficial masseter; DM, deep masseter; IOZM, infraorbital zygomaticomandibularis; MP, medial pterygoid.