Table 3.
Sleep bruxism parameters in the studied groups based on polysomnographic examination.
| Parameter | Coffee drinkers | No coffee drinkers | p | Black tea drinkers | No black tea drinkers | p |
|---|---|---|---|---|---|---|
| Bruxism episode index (BEI) (n/h) | 4.59 ± 3.44 | 2.87 ± 1.50 | 0.011 | 3.95 ± 2.44 | 4.91 ± 4.34 | >0.05 |
| Phasic BEI (n/h) | 2.17 ± 2.56 | 1.47 ± 1.05 | >0.05 | 1.75 ± 1.59 | 2.59 ± 3.34 | >0.05 |
| Tonic BEI (n/h) | 1.36 ± 1.09 | 1.44 ± 1.61 | >0.05 | 1.33 ± 1.26 | 1.47 ± 1.06 | >0.05 |
| Mixed BEI (n/h) | 0.68 ± 0.69 | 0.65 ± 0.70 | >0.05 | 0.63 ± 0.62 | 0.76 ± 0.82 | >0.05 |
| N1 BEI (n/h) | 17.05 ± 10.42 | 13.10 ± 11.14 | < 0.025 | 15.74 ± 9.49 | 17.46 ± 12.50 | >0.05 |
| N2 BEI (n/h) | 5.03 ± 4.21 | 3.73 ± 3.67 | >0.05 | 4.46 ± 3.14 | 5.41 ± 5.52 | >0.05 |
| N3 BEI (n/h) | 2.29 ± 2.08 | 1.22 ± 1.09 | 0.003 | 1.78 ± 1.53 | 2.69 ± 2.53 | >0.05 |
| REM BEI (n/h) | 3.56 ± 2.22 | 2.80 ± 2.98 | 0.019 | 3.34 ± 2.51 | 3.58 ± 2.13 | >0.05 |
| Bruxism with arousal (n/h) | 2.05 ± 1.91 | 1.76 ± 1.37 | >0.05 | 1.96 ± 1.86 | 2.07 ± 1.78 | >0.05 |
BEI, bruxism episode index; N1, non-rapid eye movement sleep stage 1; N2, non-rapid eye movement sleep stage 2; N3, non-rapid eye movement sleep stage 3; REM: rapid eye movement; n/h, number/hour; statistically significant values are shown in bold (p < 0.05).