Table 5.
Electromyographic characterization of the temporal and masseter muscles.
| Task | Group | Median (µV) | Interquartil Interval |
|---|---|---|---|
| MVC – left temporal muscle | G1 | 8.5 | 4.5 – 15.8 |
| G2 | 13.1 | 6.4 – 22.3 | |
| CG | 23.4 | 13.0 – 36.8 | |
| MVC – right temporal muscle | G1 | 8.5 | 5.7 – 14.8 |
| G2 | 15.0 | 6.9 – 29.2 | |
| CG | 22.6 | 14.4 – 30.3 | |
| MVC – left masseter muscle | G1 | 7.2 | 3.6 – 15.3 |
| G2 | 13.7 | 6.6 – 22.3 | |
| CG | 28.3 | 14.4 – 39.0 | |
| MVC – right masseter muscle | G1 | 7.2 | 3.9 – 11.1 |
| G2 | 9.6 | 4.1 – 21.7 | |
| CG | 28.2 | 17.2 – 39.7 | |
| CR – left temporal muscle | G1 | 7.5 | 2.8 – 10.5 |
| G2 | 11.1 | 6.1 – 18.5 | |
| CG | 25.4 | 15.9 – 31.0 | |
| CR – right temporal muscle | G1 | 6.5 | 4.7 – 10.5 |
| G2 | 12.7 | 6.6 – 23.8 | |
| CG | 17.6 | 10.0 – 24.8 | |
| CR – left masseter muscle | G1 | 6.6 | 3.7 – 11.1 |
| G2 | 11.1 | 7.0 – 21.7 | |
| CG | 27.3 | 19.1 – 34.9 | |
| CR – right masseter muscle | G1 | 5.6 | 3.7 – 9.3 |
| G2 | 11.6 | 5.1 – 17.9 | |
| CG | 27.7 | 16.9 – 30.9 |
Legend: µV = microvolts; MVC= maximum voluntary teeth clenching; CR= maximum voluntary teeth clenching on cotton rolls; G1= patients submitted to open fracture reduction; G2= patients submitted to closed fracture reduction with maxillomandibular fixation; CG= control group.