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Complications of the study procedures.
| Complications | 1st block (%) (n=465) | 2nd block (%) (n=155) |
|---|---|---|
| Sensory discomfort | 34 (7.3) | 6 (3.9) |
| Mastication difficulty | 5 (1.1) | 6 (3.9) |
| Tinnitus | 3 (0.7) | |
| Ptosis | 1 (0.2) | |
| Heavy salivation | 3 (0.6) | 1 (0.6) |
| Double vision | 2 (0.4) | |
| Total | 48 (10.3) | 13 (8.4) |
