Table 1.
Study groups.
| Study Groups Total. 104 Participants and 500 Saliva Samples for Mieloperoxidase (MPO) Determination |
n | Saliva Samples |
|---|---|---|
| (a) Trained Bruxistic participants (with high “intrinsic stress”) who smell Origanum majorana (AE) essential oil during 21 NO sessions. | 12 | 120 |
| (b) Trained Bruxistic participants (with high “intrinsic stress”) who do not smell O. majorana essential oil during 21 NO sessions. | 12 | 120 |
| (c) Bruxistic participants (with high “intrinsic stress”) without neurofeedback training | 30 | 120 |
| (d) Unstreased and not bruxistic patients (without NO training) | 5 | 50 |
| (e) Controls (unstressed and non bruxistic patients) without NO training. | 30 | 60 |
| (f) Controls (without stress) exposed to O.majorana during 12 NO sessions | 5 | 15 |
| (g) Control (placebo) patients who smell a neutral oil during 12 NO sessions | 5 | 15 |